baldassarri baronchelli barrat caglioti castellano cattuto complexity data_compression dattoli evolutionary_dynamics granular_media granular_media herrmann information_theory kreyon language_dynamics loreto mari mukherjee petri pietronero puglisi quantum_optics self_organization servedio statistical_physics techno_social_systems tria zapperi zippers
2012 |
Mukherjee, Animesh; Loreto, Vittorio; Tria, Francesca Why are basic color names Journal Article ADVANCES IN COMPLEX SYSTEM, 15 , pp. 1150016–1150028, 2012. Abstract | Links | BibTeX | Tag: language_dynamics, loreto, mukherjee, tria @article{b, title = {Why are basic color names }, author = {Animesh Mukherjee and Vittorio Loreto and Francesca Tria}, url = {http://www.worldscinet.com/acs/15/1503n04/S0219525911003426.html http://www.scopus.com/inward/record.url?eid=2-s2.0-84861852212&partnerID=65&md5=5dc58383af9b9dc951b3821f9790de68 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000304607400003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://socialdynamics.it/vittorioloreto/PAPERS/2012/S0219525911003426.pdf}, year = {2012}, date = {2012-01-01}, journal = {ADVANCES IN COMPLEX SYSTEM}, volume = {15}, pages = {1150016--1150028}, publisher = {WORLD SCIENTIFIC PUBL CO PTE LTD}, abstract = {It is widely known that color names across the world\'s languages tend to be organized into a neat hierarchy with a small set of \"basic names\" featuring in a comparatively fixed order across linguistic societies. However, to date, the basic names have only been defined through a set of linguistic principles. There is no statistical definition that quantitatively separates the basic names from the rest of the color words across languages. Here we present a rigorous statistical analysis of the World Color Survey database hosting color word information from 110 non-industrialized languages. The central result is that those names for which a population of individuals show a larger overall agreement across languages turn out to be the basic ones exactly reproducing the color name hierarchy and, thereby, providing, for the first time, an empirical definition of the basic color names.}, keywords = {language_dynamics, loreto, mukherjee, tria}, pubstate = {published}, tppubtype = {article} } It is widely known that color names across the world's languages tend to be organized into a neat hierarchy with a small set of "basic names" featuring in a comparatively fixed order across linguistic societies. However, to date, the basic names have only been defined through a set of linguistic principles. There is no statistical definition that quantitatively separates the basic names from the rest of the color words across languages. Here we present a rigorous statistical analysis of the World Color Survey database hosting color word information from 110 non-industrialized languages. The central result is that those names for which a population of individuals show a larger overall agreement across languages turn out to be the basic ones exactly reproducing the color name hierarchy and, thereby, providing, for the first time, an empirical definition of the basic color names. |
2011 |
Loreto, Vittorio; Tria, Francesca Linguistica in Silico Journal Article SISTEMI INTELLIGENTI, 2 , pp. 319–328, 2011. Links | BibTeX | Tag: language_dynamics, loreto, tria @article{b, title = {Linguistica in Silico}, author = {Vittorio Loreto and Francesca Tria}, url = {http://socialdynamics.it/vittorioloreto/PAPERS/2011/SISTEMI_INTELLIGENTI.pdf}, year = {2011}, date = {2011-01-01}, journal = {SISTEMI INTELLIGENTI}, volume = {2}, pages = {319--328}, keywords = {language_dynamics, loreto, tria}, pubstate = {published}, tppubtype = {article} } |
Tria, Francesca; Mukherjee, Animesh; Baronchelli, Andrea; Puglisi, Andrea; Loreto, Vittorio A fast no-rejection algorithm for the category game Journal Article JOURNAL OF COMPUTATIONAL SCIENCE, 2 , pp. 316–323, 2011. Abstract | Links | BibTeX | Tag: baronchelli, language_dynamics, loreto, mukherjee, puglisi, tria @article{b, title = {A fast no-rejection algorithm for the category game}, author = {Francesca Tria and Animesh Mukherjee and Andrea Baronchelli and Andrea Puglisi and Vittorio Loreto}, url = {http://www.sciencedirect.com/science/article/pii/S1877750311000883 http://www.scopus.com/inward/record.url?eid=2-s2.0-82455187963&partnerID=65&md5=2e81b85740b8a15a5b048389e9dbe573 http://socialdynamics.it/vittorioloreto/PAPERS/2011/JoCS_2011.pdf}, year = {2011}, date = {2011-01-01}, journal = {JOURNAL OF COMPUTATIONAL SCIENCE}, volume = {2}, pages = {316--323}, publisher = {Elsevier}, abstract = {The Category Game is a multi-agent model that accounts for the emergence of shared categorization patterns in a population of interacting individuals. In the framework of the model, linguistic categories appear as long lived consensus states that are constantly reshaped and re-negotiated by the communicating individuals. It is therefore crucial to investigate the long time behavior to gain a clear understanding of the dynamics. However, it turns out that the evolution of the emerging category system is so slow, already for small populations, that such an analysis has remained so far impossible. Here, we introduce a fast no-rejection algorithm for the Category Game that disentangles the physical simulation time from the CPU time, thus opening the way for thorough analysis of the model. We verify that the new algorithm is equivalent to the old one in terms of the emerging phenomenology and we quantify the CPU performances of the two algorithms, pointing out the neat advantages offered by the no-rejection one. This technical advance has already opened the way to new investigations of the model, thus helping to shed light on the fundamental issue of categorization.}, keywords = {baronchelli, language_dynamics, loreto, mukherjee, puglisi, tria}, pubstate = {published}, tppubtype = {article} } The Category Game is a multi-agent model that accounts for the emergence of shared categorization patterns in a population of interacting individuals. In the framework of the model, linguistic categories appear as long lived consensus states that are constantly reshaped and re-negotiated by the communicating individuals. It is therefore crucial to investigate the long time behavior to gain a clear understanding of the dynamics. However, it turns out that the evolution of the emerging category system is so slow, already for small populations, that such an analysis has remained so far impossible. Here, we introduce a fast no-rejection algorithm for the Category Game that disentangles the physical simulation time from the CPU time, thus opening the way for thorough analysis of the model. We verify that the new algorithm is equivalent to the old one in terms of the emerging phenomenology and we quantify the CPU performances of the two algorithms, pointing out the neat advantages offered by the no-rejection one. This technical advance has already opened the way to new investigations of the model, thus helping to shed light on the fundamental issue of categorization. |
Mukherjee, Animesh; Tria, Francesca; Baronchelli, Andrea; Puglisi, Andrea; Loreto, Vittorio Aging in language dynamics Journal Article PLOS ONE, 6(2) , 2011. Links | BibTeX | Tag: baronchelli, language_dynamics, loreto, mukherjee, puglisi, tria @article{b, title = {Aging in language dynamics}, author = {Animesh Mukherjee and Francesca Tria and Andrea Baronchelli and Andrea Puglisi and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79951878510&partnerID=65&md5=cdc7034d1003aad153923fb5adf9ca72 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000287482300019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://socialdynamics.it/vittorioloreto/PAPERS/2011/Mukherjee_PLS_ONE_2011.pdf}, year = {2011}, date = {2011-01-01}, journal = {PLOS ONE}, volume = {6(2)}, publisher = {San Francisco, CA : Public Library of Science}, keywords = {baronchelli, language_dynamics, loreto, mukherjee, puglisi, tria}, pubstate = {published}, tppubtype = {article} } |
Balzan, Riccardo; Dalton, Fergal; Loreto, Vittorio; Petri, Alberto; Pontuale, Giorgio Brownian motor in a granular medium Journal Article PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 83 , 2011. Abstract | Links | BibTeX | Tag: balzan, dalton, granular_media, loreto, petri @article{b, title = {Brownian motor in a granular medium}, author = {Riccardo Balzan and Fergal Dalton and Vittorio Loreto and Alberto Petri and Giorgio Pontuale}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79961110600&partnerID=65&md5=02ae65b9fd908a65c1cf7a31749a58c0 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000288947100002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2011}, date = {2011-01-01}, journal = {PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS}, volume = {83}, publisher = {pubblicata da: AMERICAN PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, USA, MD, 20740-3844}, abstract = {In this work we experimentally study the behavior of a freely rotating asymmetric probe immersed in a vibrated granular medium. For a wide variety of vibration conditions the probe exhibits a steady rotation whose direction is constant with respect to the asymmetry. By changing the vibration amplitude and by filtering the noise in different frequency bands we show that the velocity of rotation depends not only on the RMS acceleration Γ, but also on the amount of energy provided to two separate frequency bands, which are revealed to be important for the dynamics of the granular medium: The first band governs the transfer of energy from the grains to the probe, and the second affects the dynamics by altering the viscosity of the vibro-fluidized material. © 2011 American Physical Society.}, keywords = {balzan, dalton, granular_media, loreto, petri}, pubstate = {published}, tppubtype = {article} } In this work we experimentally study the behavior of a freely rotating asymmetric probe immersed in a vibrated granular medium. For a wide variety of vibration conditions the probe exhibits a steady rotation whose direction is constant with respect to the asymmetry. By changing the vibration amplitude and by filtering the noise in different frequency bands we show that the velocity of rotation depends not only on the RMS acceleration Γ, but also on the amount of energy provided to two separate frequency bands, which are revealed to be important for the dynamics of the granular medium: The first band governs the transfer of energy from the grains to the probe, and the second affects the dynamics by altering the viscosity of the vibro-fluidized material. © 2011 American Physical Society. |
Loreto, Vittorio; Tria, Francesca In Silico Linguistics Comment on Journal Article PHYSICS OF LIFE REVIEWS, 8 , pp. 371–372, 2011. Links | BibTeX | Tag: language_dynamics, loreto, tria @article{b, title = {In Silico Linguistics Comment on }, author = {Vittorio Loreto and Francesca Tria}, url = {http://www.sciencedirect.com/science/article/pii/S1571064511001011 http://www.scopus.com/inward/record.url?eid=2-s2.0-84857142593&partnerID=65&md5=139dbe1d36036cc0f4829f8f5c394b08 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000298457400009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://socialdynamics.it/vittorioloreto/PAPERS/2011/LORETO_PHYSICS_OF_LIFE_REVIEWS.pdf}, year = {2011}, date = {2011-01-01}, journal = {PHYSICS OF LIFE REVIEWS}, volume = {8}, pages = {371--372}, publisher = {ELSEVIER SCIENCE BV}, keywords = {language_dynamics, loreto, tria}, pubstate = {published}, tppubtype = {article} }
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Pompei, Simone; Tria, Francesca; Loreto, Vittorio On the accuracy of language trees Journal Article PLOS ONE, 6(6) , 2011. Links | BibTeX | Tag: evolutionary_dynamics, loreto, phylogeny, pompei, tria @article{b, title = {On the accuracy of language trees}, author = {Simone Pompei and Francesca Tria and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79958041006&partnerID=65&md5=22335465a4b96cbddf4bbc9cefd7b7a8 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000291355500005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2011}, date = {2011-01-01}, journal = {PLOS ONE}, volume = {6(6)}, publisher = {San Francisco, CA : Public Library of Science}, keywords = {evolutionary_dynamics, loreto, phylogeny, pompei, tria}, pubstate = {published}, tppubtype = {article} } |
Loreto, Vittorio; Baronchelli, Andrea; Mukherjee, Animesh; Puglisi, Andrea; Tria, Francesca Statistical physics of language dynamics Journal Article JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT, P04006 , 2011. Links | BibTeX | Tag: baronchelli, language_dynamics, loreto, mukherjee, puglisi, tria @article{b, title = {Statistical physics of language dynamics}, author = {Vittorio Loreto and Andrea Baronchelli and Animesh Mukherjee and Andrea Puglisi and Francesca Tria}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79955826233&partnerID=65&md5=01b4b20367082bee503a7ba5a2718b9d http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000289995100007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://socialdynamics.it/vittorioloreto/PAPERS/2011/LORETO_JSTAT_2011.pdf}, year = {2011}, date = {2011-01-01}, journal = {JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT}, volume = {P04006}, publisher = {Bristol : IOP Publishing}, keywords = {baronchelli, language_dynamics, loreto, mukherjee, puglisi, tria}, pubstate = {published}, tppubtype = {article} } |
2010 |
Tria, Francesca; Caglioti, Emanuele; Loreto, Vittorio; Pagnani, Andrea A Stochastic Local Search Algorithm for Distance-Based Phylogeny Reconstruction Journal Article MOLECULAR BIOLOGY AND EVOLUTION, 27 (11) , pp. 2587–2595, 2010. Links | BibTeX | Tag: caglioti, evolutionary_dynamics, loreto, pagnani, phylogeny, tria @article{b, title = {A Stochastic Local Search Algorithm for Distance-Based Phylogeny Reconstruction}, author = {Francesca Tria and Emanuele Caglioti and Vittorio Loreto and Andrea Pagnani}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77958142872&partnerID=65&md5=8bb15034042b6d808b9afb8819bb44d6 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000283118000015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2010}, date = {2010-01-01}, journal = {MOLECULAR BIOLOGY AND EVOLUTION}, volume = {27 (11)}, pages = {2587--2595}, keywords = {caglioti, evolutionary_dynamics, loreto, pagnani, phylogeny, tria}, pubstate = {published}, tppubtype = {article} } |
Tria, Francesca; Caglioti, Emanuele; Loreto, Vittorio; Pagnani, Andrea A stochastic local search approach to language tree reconstruction Journal Article 27 , pp. 341–358, 2010. Links | BibTeX | Tag: caglioti, evolutionary_dynamics, loreto, pagnani, phylogeny, tria @article{b, title = {A stochastic local search approach to language tree reconstruction}, author = {Francesca Tria and Emanuele Caglioti and Vittorio Loreto and Andrea Pagnani}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77958505543&partnerID=65&md5=2a15ef158e89c0e12ba7d0efb7201de5 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000283796800009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2010}, date = {2010-01-01}, volume = {27}, pages = {341--358}, keywords = {caglioti, evolutionary_dynamics, loreto, pagnani, phylogeny, tria}, pubstate = {published}, tppubtype = {article} } |
Caglioti, Emanuele; Loreto, Vittorio; Pompei, Simone; Tria, Francesca Distance-based Phylogenetic algorithms: new insights and applications Journal Article MATHEMATICAL MODELS AND METHODS IN APPLIED SCIENCES, 20 , pp. 1511–1532, 2010. Links | BibTeX | Tag: caglioti, evolutionary_dynamics, loreto, phylogeny, pompei, tria @article{b, title = {Distance-based Phylogenetic algorithms: new insights and applications}, author = {Emanuele Caglioti and Vittorio Loreto and Simone Pompei and Francesca Tria}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77957171910&partnerID=65&md5=41f74dd5dff0e500c1061a8d02fcd6c8 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000282218000006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2010}, date = {2010-01-01}, journal = {MATHEMATICAL MODELS AND METHODS IN APPLIED SCIENCES}, volume = {20}, pages = {1511--1532}, publisher = {World Scientific Publishing Company:PO Box 128, Farrer Road, Singapore 912805 Singapore:011 65 6 4665775, EMAIL: journal@wspc.com.sg, INTERNET: http://www.wspc.com.sg, http://www.worldscinet.com, Fax: 011 65 6 4677667}, keywords = {caglioti, evolutionary_dynamics, loreto, phylogeny, pompei, tria}, pubstate = {published}, tppubtype = {article} } |
Baronchelli, Andrea; Gong, Tao; Puglisi, Aandrea; Loreto, Vittorio Modeling the emergence of universality in color naming patterns Journal Article PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS), 107 , pp. 2403–2407, 2010. Abstract | Links | BibTeX | Tag: baronchelli, gong, language_dynamics, loreto, puglisi @article{b, title = {Modeling the emergence of universality in color naming patterns}, author = {Andrea Baronchelli and Tao Gong and Aandrea Puglisi and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77349119009&partnerID=65&md5=6cdcb665c28403d74f0a0437b8e4c0cf http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000274408100011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://socialdynamics.it/vittorioloreto/PAPERS/2010/Baronchelli_PNAS_2010.pdf}, year = {2010}, date = {2010-01-01}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS)}, volume = {107}, pages = {2403--2407}, publisher = {NATL ACAD SCIENCES}, abstract = {The empirical evidence that human color categorization exhibits some universal patterns beyond superficial discrepancies across different cultures is a major breakthrough in cognitive science. As observed in the World Color Survey (WCS), indeed, any two groups of individuals develop quite different categorization patterns, but some universal properties can be identified by a statistical analysis over a large number of populations. Here, we reproduce the WCS in a numerical model in which different populations develop independently their own categorization systems by playing elementary language games. We find that a simple perceptual constraint shared by all humans, namely the human Just Noticeable Difference (JND), is sufficient to trigger the emergence of universal patterns that unconstrained cultural interaction fails to produce. We test the results of our experiment against real data by performing the same statistical analysis proposed to quantify the universal tendencies shown in the WCS [Kay P & Regier T. (2003) Proc. Natl. Acad. Sci. USA 100: 9085-9089], and obtain an excellent quantitative agreement. This work confirms that synthetic modeling has nowadays reached the maturity to contribute significantly to the ongoing debate in cognitive science.}, keywords = {baronchelli, gong, language_dynamics, loreto, puglisi}, pubstate = {published}, tppubtype = {article} } The empirical evidence that human color categorization exhibits some universal patterns beyond superficial discrepancies across different cultures is a major breakthrough in cognitive science. As observed in the World Color Survey (WCS), indeed, any two groups of individuals develop quite different categorization patterns, but some universal properties can be identified by a statistical analysis over a large number of populations. Here, we reproduce the WCS in a numerical model in which different populations develop independently their own categorization systems by playing elementary language games. We find that a simple perceptual constraint shared by all humans, namely the human Just Noticeable Difference (JND), is sufficient to trigger the emergence of universal patterns that unconstrained cultural interaction fails to produce. We test the results of our experiment against real data by performing the same statistical analysis proposed to quantify the universal tendencies shown in the WCS [Kay P & Regier T. (2003) Proc. Natl. Acad. Sci. USA 100: 9085-9089], and obtain an excellent quantitative agreement. This work confirms that synthetic modeling has nowadays reached the maturity to contribute significantly to the ongoing debate in cognitive science. |
2009 |
Cattuto, Ciro; Barrat, Alain; Baldassarri, Andrea; Schehr, Gregory; Loreto, Vittorio Collective dynamics of social annotation Journal Article PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS), 106 , pp. 10511–10515, 2009. Links | BibTeX | Tag: baldassarri, barrat, cattuto, loreto, schehr, social_annotation, techno_social_systems @article{b, title = {Collective dynamics of social annotation}, author = {Ciro Cattuto and Alain Barrat and Andrea Baldassarri and Gregory Schehr and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-67649743814&partnerID=65&md5=b62adb16a4fd2991f30173cc832acb65 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000267564300024&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2009}, date = {2009-01-01}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS)}, volume = {106}, pages = {10511--10515}, publisher = {National Academy of Sciences:2101 Constitution Avenue Northwest:Washington, DC 20418:(877)314-2253, (615)377-3322, EMAIL: subspnas@nas.edu, INTERNET: http://www.pnas.org, Fax: (615)377-0525}, keywords = {baldassarri, barrat, cattuto, loreto, schehr, social_annotation, techno_social_systems}, pubstate = {published}, tppubtype = {article} } |
Castello, Xavi; Baronchelli, Andrea; Loreto, Vittorio Consensus and ordering in language dynamics Journal Article THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, 71 , pp. 557–564, 2009. Links | BibTeX | Tag: baronchelli, castello, language_dynamics, loreto @article{b, title = {Consensus and ordering in language dynamics}, author = {Xavi Castello and Andrea Baronchelli and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-68249096249&partnerID=65&md5=76005b925ee20178a2b71d4d0564ea76 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000271088800012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2009}, date = {2009-01-01}, journal = {THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS}, volume = {71}, pages = {557--564}, publisher = {Les Ulis: EDP Sciences. 2000- Springer Verlag Germany:Tiergartenstrasse 17, D 69121 Heidelberg Germany:011 49 6221 3450, EMAIL: g.braun@springer.de, INTERNET: http://www.springer.de, Fax: 011 49 6221 345229}, keywords = {baronchelli, castello, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Castellano, Claudio; Fortunato, Santo; Loreto, Vittorio Statistical physics of social dynamics Journal Article REVIEWS OF MODERN PHYSICS, 81 , pp. 591–657, 2009. Abstract | Links | BibTeX | Tag: castellano, fortunato, loreto, social_dynamics @article{b, title = {Statistical physics of social dynamics}, author = {Claudio Castellano and Santo Fortunato and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-65549108449&partnerID=65&md5=58a59b6faabadae96189e4b4164e6dbd http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000267197500005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2009}, date = {2009-01-01}, journal = {REVIEWS OF MODERN PHYSICS}, volume = {81}, pages = {591--657}, publisher = {American Institute of Physics:2 Huntington Quadrangle, Suite 1NO1:Melville, NY 11747:(800)344-6902, (631)576-2287, EMAIL: subs@aip.org, INTERNET: http://www.aip.org, Fax: (516)349-9704}, abstract = {Statistical physics has proven to be a fruitful framework to describe phenomena outside the realm of traditional physics. Recent years have witnessed an attempt by physicists to study collective phenomena emerging from the interactions of individuals as elementary units in social structures. A wide list of topics are reviewed ranging from opinion and cultural and language dynamics to crowd behavior, hierarchy formation, human dynamics, and social spreading. The connections between these problems and other, more traditional, topics of statistical physics are highlighted. Comparison of model results with empirical data from social systems are also emphasized.}, keywords = {castellano, fortunato, loreto, social_dynamics}, pubstate = {published}, tppubtype = {article} } Statistical physics has proven to be a fruitful framework to describe phenomena outside the realm of traditional physics. Recent years have witnessed an attempt by physicists to study collective phenomena emerging from the interactions of individuals as elementary units in social structures. A wide list of topics are reviewed ranging from opinion and cultural and language dynamics to crowd behavior, hierarchy formation, human dynamics, and social spreading. The connections between these problems and other, more traditional, topics of statistical physics are highlighted. Comparison of model results with empirical data from social systems are also emphasized. |
2008 |
Gong, Tao; Puglisi, Andrea; Loreto, Vittorio; Wang, William S -Y Conventionalization of linguistic knowledge under communicative constraints Journal Article BIOLOGICAL THEORY, 3 , pp. 154–163, 2008. BibTeX | Tag: gong, language_dynamics, loreto, puglisi, wang @article{b, title = {Conventionalization of linguistic knowledge under communicative constraints}, author = {Tao Gong and Andrea Puglisi and Vittorio Loreto and William S.-Y. Wang}, year = {2008}, date = {2008-01-01}, journal = {BIOLOGICAL THEORY}, volume = {3}, pages = {154--163}, publisher = {Cambridge, MA, USA, MIT Press Journals}, keywords = {gong, language_dynamics, loreto, puglisi, wang}, pubstate = {published}, tppubtype = {article} } |
Puglisi, Andrea; Baronchelli, Andrea; Loreto, Vittorio Cultural route to the emergence of linguistic categories Journal Article PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS), 105 , pp. 7936–7939, 2008. Links | BibTeX | Tag: baronchelli, language_dynamics, loreto, puglisi @article{b, title = {Cultural route to the emergence of linguistic categories}, author = {Andrea Puglisi and Andrea Baronchelli and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-45849101242&partnerID=65&md5=93cf92e119cb5a960d2778c3c697e945 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000256781800008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2008}, date = {2008-01-01}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS)}, volume = {105}, pages = {7936--7939}, publisher = {National Academy of Sciences:2101 Constitution Avenue Northwest:Washington, DC 20418:(877)314-2253, (615)377-3322, EMAIL: subspnas@nas.edu, INTERNET: http://www.pnas.org, Fax: (615)377-0525}, keywords = {baronchelli, language_dynamics, loreto, puglisi}, pubstate = {published}, tppubtype = {article} } |
Loreto, Vittorio; Pietronero, Luciano; Zapperi, Stefano Editorial Journal Article THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, 64(3-4) , pp. 301–305, 2008. Links | BibTeX | Tag: loreto, pietronero, statistical_physics, zapperi @article{b, title = {Editorial}, author = {Vittorio Loreto and Luciano Pietronero and Stefano Zapperi}, url = {http://link.springer.com/content/pdf/10.1140%2Fepjb%2Fe2008-00319-2.pdf http://www.scopus.com/inward/record.url?eid=2-s2.0-53149153877&partnerID=65&md5=2e0f94184809a0100dc4f96bc3781099 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000259677600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2008}, date = {2008-01-01}, journal = {THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS}, volume = {64(3-4)}, pages = {301--305}, keywords = {loreto, pietronero, statistical_physics, zapperi}, pubstate = {published}, tppubtype = {article} } |
Cattuto, Ciro; Baldassarri, Andrea; Servedio, Vito D P; Loreto, Vittorio Emergent Community Structure in Social Tagging Systems Journal Article ADVANCES IN COMPLEX SYSTEM, 11 , pp. 597–608, 2008. Links | BibTeX | Tag: baldassarri, cattuto, loreto, servedio, techno_social_systems @article{b, title = {Emergent Community Structure in Social Tagging Systems}, author = {Ciro Cattuto and Andrea Baldassarri and Vito D.P. Servedio and Vittorio Loreto}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000261389600008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2008}, date = {2008-01-01}, journal = {ADVANCES IN COMPLEX SYSTEM}, volume = {11}, pages = {597--608}, publisher = {WORLD SCIENTIFIC PUBL CO PTE LTD, JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE, SINGAPORE, 912805}, keywords = {baldassarri, cattuto, loreto, servedio, techno_social_systems}, pubstate = {published}, tppubtype = {article} } |
Baronchelli, Andrea; Loreto, Vittorio; Steels, Luc In-depth analysis of the Naming Game dynamics: the homogeneous mixing case Journal Article INTERNATIONAL JOURNAL OF MODERN PHYSICS C, 19 , pp. 785–812, 2008. Links | BibTeX | Tag: baronchelli, language_dynamics, loreto, steels @article{b, title = {In-depth analysis of the Naming Game dynamics: the homogeneous mixing case}, author = {Andrea Baronchelli and Vittorio Loreto and Luc Steels}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-47049099575&partnerID=65&md5=4a29772df34627191816997734000982 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000257761400010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2008}, date = {2008-01-01}, journal = {INTERNATIONAL JOURNAL OF MODERN PHYSICS C}, volume = {19}, pages = {785--812}, publisher = {World Scientific Publishing Company:PO Box 128, Farrer Road, Singapore 912805 Singapore:011 65 6 4665775, EMAIL: journal@wspc.com.sg, INTERNET: http://www.wspc.com.sg, http://www.worldscinet.com, Fax: 011 65 6 4677667}, keywords = {baronchelli, language_dynamics, loreto, steels}, pubstate = {published}, tppubtype = {article} } |
Petri, Alberto; Berganza, Miguel Ibagnez De; Loreto, Vittorio Ordering dynamics in the presence of multiple phases Journal Article PHILOSOPHICAL MAGAZINE, 88 , pp. 3931–3938, 2008. Links | BibTeX | Tag: ibanez, loreto, petri, statistical_physics @article{b, title = {Ordering dynamics in the presence of multiple phases}, author = {Alberto Petri and Miguel Ibagnez De Berganza and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-58049188531&partnerID=65&md5=d7eaf074195387c3718086ed333c5a16 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000261804100008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2008}, date = {2008-01-01}, journal = {PHILOSOPHICAL MAGAZINE}, volume = {88}, pages = {3931--3938}, publisher = {Taylor & Francis Limited:Rankine Road, Basingstoke RG24 8PR United Kingdom:011 44 1256 813035, EMAIL: madeline.sims@tandf.co.uk, info@tandf.co.uk, INTERNET: http://www.tandf.co.uk, Fax: 011 44 1256 330245}, keywords = {ibanez, loreto, petri, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Toris, Patrizia; Rubeis, Valerio De; Loreto, Vittorio; Pietronero, Luciano Space-time correlations of earthquakes Journal Article GEOPHYSICAL JOURNAL INTERNATIONAL, 173(3) , pp. 932–941, 2008. Abstract | Links | BibTeX | Tag: clustering, correlation, derubeis, loreto, memory, persistence, pietronero, statistical seismology, statistical_physics, tosi @article{b, title = {Space-time correlations of earthquakes}, author = {Patrizia Toris and Valerio De Rubeis and Vittorio Loreto and Luciano Pietronero}, url = {http://gji.oxfordjournals.org/content/173/3/932, http://www.scopus.com/inward/record.url?eid=2-s2.0-43449129493&partnerID=65&md5=781012778cff79bd9d3baf409098ca71 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000255708100014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2008}, date = {2008-01-01}, journal = {GEOPHYSICAL JOURNAL INTERNATIONAL}, volume = {173(3)}, pages = {932--941}, publisher = {Blackwell Science Limited:PO Box 88, Oxford OX2 0NE United Kingdom:011 44 1865 776868, 011 44 1865 206038, EMAIL: journals.cs@blacksci.co.uk, INTERNET: http://www.blackwell-science.com, Fax: 011 44 1865 721205}, abstract = {Seismicity is a complex process featuring non-trivial space-time correlations in which several forms of scale invariance have been identified. A frequently used method to detect scale-invariant features is the correlation integral, which leads to the definition of a correlation dimension separately in space and time. In this paper, we generalize this method with the definition of a space-time combined correlation integral. This approach allows us to analyse medium-strong seismicity as a point process, without any distinction among main, after or background shocks. The analyses performed on the catalogue of worldwide seismicity and the corresponding reshuffled version strongly suggest that earthquakes of medium-large magnitude are time clustered inside specific space-time regions. On the basis of this feature, we recognize a space-time domain statistically characterized by sequences' behaviour and a domain of temporal randomness. Then, focusing on the spatial distribution of hypocentres, we find another domain confined to short distances and characterized by a relatively high degree of spatial correlation. This spatial domain slowly increases with time: we interpret this as the 'afterevent' zone representing the set of all subsequent events located very near (about 30 km) to each reference earthquake and embedded on specific seismogenic structures such as faults planes.}, keywords = {clustering, correlation, derubeis, loreto, memory, persistence, pietronero, statistical seismology, statistical_physics, tosi}, pubstate = {published}, tppubtype = {article} } Seismicity is a complex process featuring non-trivial space-time correlations in which several forms of scale invariance have been identified. A frequently used method to detect scale-invariant features is the correlation integral, which leads to the definition of a correlation dimension separately in space and time. In this paper, we generalize this method with the definition of a space-time combined correlation integral. This approach allows us to analyse medium-strong seismicity as a point process, without any distinction among main, after or background shocks. The analyses performed on the catalogue of worldwide seismicity and the corresponding reshuffled version strongly suggest that earthquakes of medium-large magnitude are time clustered inside specific space-time regions. On the basis of this feature, we recognize a space-time domain statistically characterized by sequences' behaviour and a domain of temporal randomness. Then, focusing on the spatial distribution of hypocentres, we find another domain confined to short distances and characterized by a relatively high degree of spatial correlation. This spatial domain slowly increases with time: we interpret this as the 'afterevent' zone representing the set of all subsequent events located very near (about 30 km) to each reference earthquake and embedded on specific seismogenic structures such as faults planes. |
2007 |
Barrat, Alain; Baronchelli, Andrea; Dall'Asta, Luca; Loreto, Vittorio Agreement dynamics on interaction networks with diverse topologies Journal Article CHAOS, 17 , pp. 026111–026115, 2007. Links | BibTeX | Tag: baronchelli, barrat, dall'asta, language_dynamics, loreto @article{b, title = {Agreement dynamics on interaction networks with diverse topologies}, author = {Alain Barrat and Andrea Baronchelli and Luca Dall'Asta and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-34547353611&partnerID=65&md5=8d4a4050872c53ba75cc95e8520c4bd5 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000247625600044&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2007}, date = {2007-01-01}, journal = {CHAOS}, volume = {17}, pages = {026111--026115}, publisher = {American Institute of Physics:2 Huntington Quadrangle, Suite 1NO1:Melville, NY 11747:(800)344-6902, (631)576-2287, EMAIL: subs@aip.org, INTERNET: http://www.aip.org, Fax: (516)349-9704}, keywords = {baronchelli, barrat, dall'asta, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Berganza, Miguel Ibanez De; Loreto, Vittorio; Petri, Alberto Dinamic metastability in the two-dimensional Potts model Journal Article arXiv/0706.3534 , pp. 1–7, 2007. BibTeX | Tag: ibanez, loreto, petri, statistical_physics @article{b, title = {Dinamic metastability in the two-dimensional Potts model}, author = {Miguel Ibanez De Berganza and Vittorio Loreto and Alberto Petri}, year = {2007}, date = {2007-01-01}, volume = {arXiv/0706.3534}, pages = {1--7}, publisher = {arXiv (United States)}, keywords = {ibanez, loreto, petri, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Loreto, Vittorio; Steels, Luc Emergence of Language Journal Article NATURE PHYSICS, 3 , pp. 758–760, 2007. Links | BibTeX | Tag: language_dynamics, loreto, steels @article{b, title = {Emergence of Language}, author = {Vittorio Loreto and Luc Steels}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-35748960499&partnerID=65&md5=13a826118a67df61642f363f78828665 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000251265800009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2007}, date = {2007-01-01}, journal = {NATURE PHYSICS}, volume = {3}, pages = {758--760}, keywords = {language_dynamics, loreto, steels}, pubstate = {published}, tppubtype = {article} } |
Cattuto, Ciro; Schmitz, Christoph; Baldassarri, Andrea; Servedio, Vito D P; Loreto, Vittorio; Hotho, Andreas; Grahl, Martin; Stumme, Gerd Network properties of folksonomies Journal Article AI COMMUNICATIONS, 20 , pp. 245–262, 2007. BibTeX | Tag: baldassarri, cattuto, hotho, loreto, schmitz, servedio, stumme, techno_social_systems @article{b, title = {Network properties of folksonomies}, author = {Ciro Cattuto and Christoph Schmitz and Andrea Baldassarri and Vito D.P. Servedio and Vittorio Loreto and Andreas Hotho and Martin Grahl and Gerd Stumme}, year = {2007}, date = {2007-01-01}, journal = {AI COMMUNICATIONS}, volume = {20}, pages = {245--262}, publisher = {IOS Press:Nieuwe Hemweg 6B, 1013 BG Amsterdam Netherlands:011 31 20 6883355, EMAIL: r.tosendjojo@iospress.nl, INTERNET: http://www.iospress.nl, Fax: 011 31 20 6203419}, keywords = {baldassarri, cattuto, hotho, loreto, schmitz, servedio, stumme, techno_social_systems}, pubstate = {published}, tppubtype = {article} } |
Baronchelli, Andrea; Dall'Asta, Luca; Barrat, Alain; Loreto, Vittorio Non-equilibrium phase transition in negotiation dynamics Journal Article PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 76 , pp. 051102:1–051102:4, 2007. Links | BibTeX | Tag: baronchelli, barrat, dall'asta, language_dynamics, loreto @article{b, title = {Non-equilibrium phase transition in negotiation dynamics}, author = {Andrea Baronchelli and Luca Dall'Asta and Alain Barrat and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-35948936459&partnerID=65&md5=eb4e4c9dc139286265ebd7f916e936e0 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000251326100009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2007}, date = {2007-01-01}, journal = {PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS}, volume = {76}, pages = {051102:1--051102:4}, publisher = {pubblicata da: AMERICAN PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, USA, MD, 20740-3844}, keywords = {baronchelli, barrat, dall'asta, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Berganza, Miguel Ibanez De; Loreto, Vittorio; Petri, Alberto Phase ordering and symmetries of the Potts model Journal Article PHILOSOPHICAL MAGAZINE, 87 , pp. 779–786, 2007. Links | BibTeX | Tag: ibanez, loreto, petri, statistical_physics @article{b, title = {Phase ordering and symmetries of the Potts model}, author = {Miguel Ibanez De Berganza and Vittorio Loreto and Alberto Petri}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33847096319&partnerID=65&md5=959ab3c3ff23950fcebf747fd38acaee http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000244150900050&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2007}, date = {2007-01-01}, journal = {PHILOSOPHICAL MAGAZINE}, volume = {87}, pages = {779--786}, publisher = {Taylor & Francis Limited:Rankine Road, Basingstoke RG24 8PR United Kingdom:011 44 1256 813035, EMAIL: madeline.sims@tandf.co.uk, info@tandf.co.uk, INTERNET: http://www.tandf.co.uk, Fax: 011 44 1256 330245}, keywords = {ibanez, loreto, petri, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Berganza, Miguel Ibanez De; Ferrero, Ezequiel E; Cannas, Sergio; Loreto, Vittorio; Petri, Alberto Phase separation of the Potts model in the square lattice Journal Article THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS, 143 , pp. 273–275, 2007. Links | BibTeX | Tag: ibanez, loreto, petri, statistical_physics @article{b, title = {Phase separation of the Potts model in the square lattice}, author = {Miguel Ibanez De Berganza and Ezequiel E. Ferrero and Sergio Cannas and Vittorio Loreto and Alberto Petri}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-34249051014&partnerID=65&md5=5e27afa20cc7096a910b74547cb0b2d9 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000246985800041&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2007}, date = {2007-01-01}, journal = {THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS}, volume = {143}, pages = {273--275}, publisher = {EDP Sciences, Società Italiana di Fisica and Springer Berlin Heidelberg.}, keywords = {ibanez, loreto, petri, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Cattuto, Ciro; Loreto, Vittorio; Pietronero, Luciano Semiotic dynamics and collaborative tagging Journal Article PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS), 104 , pp. 1461–1464, 2007. Abstract | Links | BibTeX | Tag: cattuto, loreto, pietronero, techno_social_systems @article{b, title = {Semiotic dynamics and collaborative tagging}, author = {Ciro Cattuto and Vittorio Loreto and Luciano Pietronero}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33846811604&partnerID=65&md5=2c999e995248b00346e3529eddcd4365 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000244081000006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a, http://www.pnas.org/content/104/5/1461}, year = {2007}, date = {2007-01-01}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (PNAS)}, volume = {104}, pages = {1461--1464}, publisher = {The National Academy of Sciencs of the USA - 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA}, abstract = {Collaborative tagging has been quickly gaining ground because of its ability to recruit the activity of web users into effectively organizing and sharing vast amounts of information. Here we collect data from a popular system and investigate the statistical properties of tag cooccurrence. We introduce a stochastic model of user behavior embodying two main aspects of collaborative tagging: (i) a frequency-bias mechanism related to the idea that users are exposed to each other's tagging activity; (ii) a notion of memory, or aging of resources, in the form of a heavy-tailed access to the past state of the system. Remarkably, our simple modeling is able to account quantitatively for the observed experimental features with a surprisingly high accuracy. This points in the direction of a universal behavior of users who, despite the complexity of their own cognitive processes and the uncoordinated and selfish nature of their tagging activity, appear to follow simple activity patterns.}, keywords = {cattuto, loreto, pietronero, techno_social_systems}, pubstate = {published}, tppubtype = {article} } Collaborative tagging has been quickly gaining ground because of its ability to recruit the activity of web users into effectively organizing and sharing vast amounts of information. Here we collect data from a popular system and investigate the statistical properties of tag cooccurrence. We introduce a stochastic model of user behavior embodying two main aspects of collaborative tagging: (i) a frequency-bias mechanism related to the idea that users are exposed to each other's tagging activity; (ii) a notion of memory, or aging of resources, in the form of a heavy-tailed access to the past state of the system. Remarkably, our simple modeling is able to account quantitatively for the observed experimental features with a surprisingly high accuracy. This points in the direction of a universal behavior of users who, despite the complexity of their own cognitive processes and the uncoordinated and selfish nature of their tagging activity, appear to follow simple activity patterns. |
Baronchelli, Andrea; Dall'Asta, Luca; Barrat, Alain; Loreto, Vittorio The role of topology on the dynamics of the Naming Game Journal Article THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS, 143 , pp. 233–235, 2007. Links | BibTeX | Tag: baronchelli, barrat, dall'asta, language_dynamics, loreto @article{b, title = {The role of topology on the dynamics of the Naming Game}, author = {Andrea Baronchelli and Luca Dall'Asta and Alain Barrat and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-34249056135&partnerID=65&md5=8b2daa7fa607044c83128c248f43d436 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000246985800031&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2007}, date = {2007-01-01}, journal = {THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS}, volume = {143}, pages = {233--235}, publisher = {Elsevier Science Limited:Oxford Fulfillment Center, PO Box 800, Kidlington Oxford OX5 1DX United Kingdom:011 44 1865 843000, 011 44 1865 843699, EMAIL: asianfo@elsevier.com, tcb@elsevier.co.UK, INTERNET: http://www.elsevier.com, http://www.elsevier.com/locate/shpsa/, Fax: 011 44 1865 843010}, keywords = {baronchelli, barrat, dall'asta, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Cattuto, Ciro; Baldassarri, Andrea; Servedio, Vito D P; Loreto, Vittorio Vocabulary growth in collaborative tagging systems Journal Article 2007. BibTeX | Tag: baldassarri, cattuto, loreto, servedio, techno_social_systems @article{b, title = {Vocabulary growth in collaborative tagging systems}, author = {Ciro Cattuto and Andrea Baldassarri and Vito D.P. Servedio and Vittorio Loreto}, year = {2007}, date = {2007-01-01}, publisher = {arXiv.org > cs > arXiv:0704.3316}, keywords = {baldassarri, cattuto, loreto, servedio, techno_social_systems}, pubstate = {published}, tppubtype = {article} } |
2006 |
Cattuto, Ciro; Loreto, Vittorio; Servedio, Vito D P A Yule-Simon process with long-term memory Journal Article EUROPHYSICS LETTERS, 76 , pp. 208–214, 2006. Links | BibTeX | Tag: cattuto, language_dynamics, loreto, servedio, techno_social_systems @article{b, title = {A Yule-Simon process with long-term memory}, author = {Ciro Cattuto and Vittorio Loreto and Vito D.P. Servedio}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33750355454&partnerID=65&md5=97945c5a7352e4354fd77989abe1b901 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000241076600006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2006}, date = {2006-01-01}, journal = {EUROPHYSICS LETTERS}, volume = {76}, pages = {208--214}, publisher = {EDP Sciences:17 Ave Du Hoggar, BP112, 91944 Les Ulis Cedex A France:011 33 1 69187575, EMAIL: subscribers@edpsciences.com, INTERNET: http://www.edpsciences.com, Fax: 011 33 1 69860678}, keywords = {cattuto, language_dynamics, loreto, servedio, techno_social_systems}, pubstate = {published}, tppubtype = {article} } |
Dall'Asta, Luca; Baronchelli, Andrea; Barrat, Alain; Loreto, Vittorio Agreement dynamics on small-world networks Journal Article EUROPHYSICS LETTERS, 73 , pp. 969–975, 2006. Links | BibTeX | Tag: baronchelli, barrat, dall'asta, language_dynamics, loreto @article{b, title = {Agreement dynamics on small-world networks}, author = {Luca Dall'Asta and Andrea Baronchelli and Alain Barrat and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33645230062&partnerID=65&md5=15efce9edd7907fd600f50ab4b9f7498 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000235778100024&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2006}, date = {2006-01-01}, journal = {EUROPHYSICS LETTERS}, volume = {73}, pages = {969--975}, publisher = {EDP Sciences:17 Ave Du Hoggar, BP112, 91944 Les Ulis Cedex A France:011 33 1 69187575, EMAIL: subscribers@edpsciences.com, INTERNET: http://www.edpsciences.com, Fax: 011 33 1 69860678}, keywords = {baronchelli, barrat, dall'asta, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Taloni, Alessandro; Cagliori, Emanuele; Loreto, Vittorio; Pietronero, Luciano Conformal approach to cylindrical DLA Journal Article JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT, Art. n. P09004 , 2006. Abstract | Links | BibTeX | Tag: caglioti, DLA, fractals, loreto, pietronero, self_organization, statistical_physics, taloni @article{b, title = {Conformal approach to cylindrical DLA}, author = {Alessandro Taloni and Emanuele Cagliori and Vittorio Loreto and Luciano Pietronero}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-37649026579&partnerID=65&md5=18e07a1e17966902ff4a2c6e9b9dadfc http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000241413300004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2006}, date = {2006-01-01}, journal = {JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT}, volume = {Art. n. P09004}, abstract = {We extend the conformal mapping approach elaborated for the radial diffusion limited aggregation model (DLA) to cylindrical geometry. We introduce in particular a complex function which allows a cylindrical cluster to be grown using as an intermediate step a radial aggregate. The aggregate grown exhibits the same self-affine features as the original cylindrical DLA. The specific choice of the transformation allows us to study the relationship between the radial and the cylindrical geometry. In particular the cylindrical aggregate can be seen as a radial aggregate with particles of size increasing with the radius. On the other hand, the radial aggregate can be seen as a cylindrical aggregate with particles of size decreasing with the height. This framework, which shifts the point of view from the geometry to the size of the particles, can open the way to more quantitative studies on the relationship between radial and cylindrical DLA.}, keywords = {caglioti, DLA, fractals, loreto, pietronero, self_organization, statistical_physics, taloni}, pubstate = {published}, tppubtype = {article} } We extend the conformal mapping approach elaborated for the radial diffusion limited aggregation model (DLA) to cylindrical geometry. We introduce in particular a complex function which allows a cylindrical cluster to be grown using as an intermediate step a radial aggregate. The aggregate grown exhibits the same self-affine features as the original cylindrical DLA. The specific choice of the transformation allows us to study the relationship between the radial and the cylindrical geometry. In particular the cylindrical aggregate can be seen as a radial aggregate with particles of size increasing with the radius. On the other hand, the radial aggregate can be seen as a cylindrical aggregate with particles of size decreasing with the height. This framework, which shifts the point of view from the geometry to the size of the particles, can open the way to more quantitative studies on the relationship between radial and cylindrical DLA. |
Baronchelli, Andrea; Dall'Asta, Luca; Barrat, Alain; Loreto, Vittorio Nonequilibrium dynamics of language games on complex networks Journal Article PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 74 , pp. 036105:1–036105:13, 2006. Links | BibTeX | Tag: baronchelli, barrat, dall'asta, language_dynamics, loreto @article{b, title = {Nonequilibrium dynamics of language games on complex networks}, author = {Andrea Baronchelli and Luca Dall'Asta and Alain Barrat and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33748696781&partnerID=65&md5=cc64be303c18646cd76a8fe460a36220 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000240870300021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2006}, date = {2006-01-01}, journal = {PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS}, volume = {74}, pages = {036105:1--036105:13}, publisher = {pubblicata da: AMERICAN PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, USA, MD, 20740-3844}, keywords = {baronchelli, barrat, dall'asta, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Canettieri, Paolo; Loreto, Vittorio; Rovetta, Marta; Santini, Giovanna Philology and Information Theory: towards an integrated approach Journal Article LINGUISTICA COMPUTAZIONALE, 6 , pp. 104–126, 2006. BibTeX | Tag: canettieri, complexity, information_theory, loreto, phylology, rovetta, santini @article{b, title = {Philology and Information Theory: towards an integrated approach}, author = {Paolo Canettieri and Vittorio Loreto and Marta Rovetta and Giovanna Santini}, year = {2006}, date = {2006-01-01}, journal = {LINGUISTICA COMPUTAZIONALE}, volume = {6}, pages = {104--126}, keywords = {canettieri, complexity, information_theory, loreto, phylology, rovetta, santini}, pubstate = {published}, tppubtype = {article} } |
Baronchelli, Aandrea; Loreto, Vittorio Ring structures and mean field passage time in networks Journal Article PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 73 , pp. 026103–026109, 2006. Links | BibTeX | Tag: baronchelli, language_dynamics, loreto @article{b, title = {Ring structures and mean field passage time in networks}, author = {Aandrea Baronchelli and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33344457811&partnerID=65&md5=119cf3f6f09d56d4ce82928d108caf1f http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000235667700017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2006}, date = {2006-01-01}, journal = {PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS}, volume = {73}, pages = {026103--026109}, publisher = {AMERICAN PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, USA, MD, 20740-3844}, keywords = {baronchelli, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Baronchelli, Andrea; Felici, Maddalena; Loreto, Vittorio; Caglioti, Emanuele; Steels, Luc Sharp transition towards shared vocabularies in multi-agent systems Journal Article JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT, P06014 , pp. P06014–P06019, 2006. Abstract | Links | BibTeX | Tag: baronchelli, caglioti, felici, language_dynamics, loreto, steels @article{b, title = {Sharp transition towards shared vocabularies in multi-agent systems}, author = {Andrea Baronchelli and Maddalena Felici and Vittorio Loreto and Emanuele Caglioti and Luc Steels}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-42749102031&partnerID=65&md5=0d19c9fc9b115fd59f34ab6aa076a560 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000238970000010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2006}, date = {2006-01-01}, journal = {JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT}, volume = {P06014}, pages = {P06014--P06019}, abstract = {What processes can explain how very large populations are able to converge on the use of a particular word or grammatical construction without global coordination? Answering this question helps to understand why new language constructs usually propagate along an S-shaped curve with a rather sudden transition towards global agreement. It also helps to analyse and design new technologies that support or orchestrate self-organizing communication systems, such as recent social tagging systems for the web. The article introduces and studies a microscopic model of communicating autonomous agents performing language games without any central control. We show that the system undergoes a disorder/order transition, going through a sharp symmetry breaking process to reach a shared set of conventions. Before the transition, the system builds up non-trivial scale-invariant correlations, for instance in the distribution of competing synonyms, which display a Zipf-like law. These correlations make the system ready for the transition towards shared conventions, which, observed on the timescale of collective behaviours, becomes sharper and sharper with system size. This surprising result not only explains why human language can scale up to very large populations but also suggests ways to optimize artificial semiotic dynamics.}, keywords = {baronchelli, caglioti, felici, language_dynamics, loreto, steels}, pubstate = {published}, tppubtype = {article} } What processes can explain how very large populations are able to converge on the use of a particular word or grammatical construction without global coordination? Answering this question helps to understand why new language constructs usually propagate along an S-shaped curve with a rather sudden transition towards global agreement. It also helps to analyse and design new technologies that support or orchestrate self-organizing communication systems, such as recent social tagging systems for the web. The article introduces and studies a microscopic model of communicating autonomous agents performing language games without any central control. We show that the system undergoes a disorder/order transition, going through a sharp symmetry breaking process to reach a shared set of conventions. Before the transition, the system builds up non-trivial scale-invariant correlations, for instance in the distribution of competing synonyms, which display a Zipf-like law. These correlations make the system ready for the transition towards shared conventions, which, observed on the timescale of collective behaviours, becomes sharper and sharper with system size. This surprising result not only explains why human language can scale up to very large populations but also suggests ways to optimize artificial semiotic dynamics. |
Baronchelli, Andrea; Dall'Asta, Luca; Barrat, Alain; Loreto, Vittorio Topology induced coarsening in language games Journal Article PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 73 , pp. 015102–015105, 2006. Links | BibTeX | Tag: baronchelli, barrat, dall'asta, language_dynamics, loreto @article{b, title = {Topology induced coarsening in language games}, author = {Andrea Baronchelli and Luca Dall'Asta and Alain Barrat and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-32844475670&partnerID=65&md5=1c3b97e4d519590a2e5dd017a0da5ea9 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000235008800002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2006}, date = {2006-01-01}, journal = {PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS}, volume = {73}, pages = {015102--015105}, publisher = {AMERICAN PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, USA, MD, 20740-3844}, keywords = {baronchelli, barrat, dall'asta, language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
2005 |
Baronchelli, Andrea; Caglioti, Emanuele; Loreto, Vittorio Artificial sequences and complexity measures Journal Article JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT, P04002 , pp. P04002:1–P04002:10, 2005. Links | BibTeX | Tag: baronchelli, caglioti, complexity, information_theory, loreto, zippers @article{b, title = {Artificial sequences and complexity measures}, author = {Andrea Baronchelli and Emanuele Caglioti and Vittorio Loreto}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000228865100013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2005}, date = {2005-01-01}, journal = {JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT}, volume = {P04002}, pages = {P04002:1--P04002:10}, keywords = {baronchelli, caglioti, complexity, information_theory, loreto, zippers}, pubstate = {published}, tppubtype = {article} } |
Castellano, Claudio; Loreto, Vittorio; Barrat, Alain; Cecconi, Federico; Parisi, Domenico Comparison of voter and Glauber ordering dynamics on networks Journal Article PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 71 , pp. 066107–066114, 2005. Links | BibTeX | Tag: barrat, castellano, cecconi, loreto, opinion_dynamics, parisi, social_dynamics, statistical_physics @article{b, title = {Comparison of voter and Glauber ordering dynamics on networks}, author = {Claudio Castellano and Vittorio Loreto and Alain Barrat and Federico Cecconi and Domenico Parisi}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-27944464161&partnerID=65&md5=e33dbf7e41cab953b8225aab3fc4c019 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000230275000023&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2005}, date = {2005-01-01}, journal = {PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS}, volume = {71}, pages = {066107--066114}, publisher = {AMERICAN PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, USA, MD, 20740-3844}, keywords = {barrat, castellano, cecconi, loreto, opinion_dynamics, parisi, social_dynamics, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Baronchelli, Andrea; Caglioti, Emanuele; Loreto, Vittorio Measuring complexity with zippers Journal Article EUROPEAN JOURNAL OF PHYSICS, 26 , pp. S69–S77, 2005. Links | BibTeX | Tag: baronchelli, caglioti, complexity, information_theory, loreto, zippers @article{b, title = {Measuring complexity with zippers}, author = {Andrea Baronchelli and Emanuele Caglioti and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-23844518349&partnerID=65&md5=c4ee268ca9d645082e80a458ee363027 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000232321900009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2005}, date = {2005-01-01}, journal = {EUROPEAN JOURNAL OF PHYSICS}, volume = {26}, pages = {S69--S77}, keywords = {baronchelli, caglioti, complexity, information_theory, loreto, zippers}, pubstate = {published}, tppubtype = {article} } |
Mayor, Patrick; D'Anna, Gianfranco; Barrat, Alain; Loreto, Vittorio Observing Brownian motion and measuring temperatures in vibration-fluidized granular matter Journal Article NEW JOURNAL OF PHYSICS, 7 , pp. 28:1–28:16, 2005. Links | BibTeX | Tag: barrat, d'anna, granular_media, loreto, mayor, statistical_physics @article{b, title = {Observing Brownian motion and measuring temperatures in vibration-fluidized granular matter}, author = {Patrick Mayor and Gianfranco D'Anna and Alain Barrat and Vittorio Loreto}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-23244463214&partnerID=65&md5=ab647ce5c19f3b37e1fc3bb3db281654 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000226678500009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2005}, date = {2005-01-01}, journal = {NEW JOURNAL OF PHYSICS}, volume = {7}, pages = {28:1--28:16}, publisher = {Institute of Physics Publishing, IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL, ENGLAND, BS1 6BE}, keywords = {barrat, d'anna, granular_media, loreto, mayor, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Baldassarri, Andrea; Barrat, Alain; D'Anna, Gianfranco; Loreto, Vittorio; Mayor, Patrick; Puglisi, Andrea What is the temperature of a granular medium? Journal Article JOURNAL OF PHYSICS. CONDENSED MATTER, 24 , pp. S2405–S2428, 2005. Links | BibTeX | Tag: baldassarri, barrat, d'anna, granular_media, loreto, mayor, puglisi, statistical_physics @article{b, title = {What is the temperature of a granular medium?}, author = {Andrea Baldassarri and Alain Barrat and Gianfranco D'Anna and Vittorio Loreto and Patrick Mayor and Andrea Puglisi}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-21044433896&partnerID=65&md5=4b3ab620fa27fd3f11495949b3b9091f http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000230654100004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2005}, date = {2005-01-01}, journal = {JOURNAL OF PHYSICS. CONDENSED MATTER}, volume = {24}, pages = {S2405--S2428}, publisher = {IOP Publishing Limited:Dirac House, Temple Back, Bristol BS1 6BE United Kingdom:011 44 117 9297481, EMAIL: custserv@iop.org, INTERNET: http://www.iop.org, Fax: 011 44 117 9294318}, keywords = {baldassarri, barrat, d'anna, granular_media, loreto, mayor, puglisi, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
2004 |
Alderduccio, Daniela; Bordoni, Luciana; Loreto, Vittorio A data compression approach to monolingual GIRT task: an agnostic point of view Journal Article LECTURE NOTES IN COMPUTER SCIENCE, 3237 , pp. 391–400, 2004. Abstract | Links | BibTeX | Tag: complexity, data_compression, information_theory, loreto, zippers @article{b, title = {A data compression approach to monolingual GIRT task: an agnostic point of view}, author = {Daniela Alderduccio and Luciana Bordoni and Vittorio Loreto}, url = {http://www.springerlink.com/content/rclr22d4636dgpb0/}, year = {2004}, date = {2004-01-01}, journal = {LECTURE NOTES IN COMPUTER SCIENCE}, volume = {3237}, pages = {391--400}, publisher = {C. Peters (Ed.) (Springer-Verlag)}, abstract = {In this paper we apply a data-compression IR method in the GIRT social science database, focusing on the monolingual task in German and English. For this purpose we use a recently proposed general scheme for context recognition and context classification of strings of characters (in particular texts) or other coded information. The key point of the method is the computation of a suitable measure of remoteness (or similarity) between two strings of characters. This measure of remoteness reflects the distance between the structures present in the two strings, i.e. between the two different distributions of elements of the compared sequences. The hypothesis is that the information-theory oriented measure of remoteness between two sequences could reflect their semantic distance. It is worth stressing the generality and versatility of our information-theoretic method which applies to any kind of corpora of character strings, whatever the type of coding used (i.e. language).}, keywords = {complexity, data_compression, information_theory, loreto, zippers}, pubstate = {published}, tppubtype = {article} } In this paper we apply a data-compression IR method in the GIRT social science database, focusing on the monolingual task in German and English. For this purpose we use a recently proposed general scheme for context recognition and context classification of strings of characters (in particular texts) or other coded information. The key point of the method is the computation of a suitable measure of remoteness (or similarity) between two strings of characters. This measure of remoteness reflects the distance between the structures present in the two strings, i.e. between the two different distributions of elements of the compared sequences. The hypothesis is that the information-theory oriented measure of remoteness between two sequences could reflect their semantic distance. It is worth stressing the generality and versatility of our information-theoretic method which applies to any kind of corpora of character strings, whatever the type of coding used (i.e. language). |
Radicchi, Filippo; Castellano, Claudio; Cecconi, Federico; Loreto, Vittorio; Parisi, Domenico Defining and identifying communities in networks Journal Article PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 101 , pp. 2658–2663, 2004. Abstract | Links | BibTeX | Tag: castellano, cecconi, complex_networks, loreto, parisi, radicchi @article{b, title = {Defining and identifying communities in networks}, author = {Filippo Radicchi and Claudio Castellano and Federico Cecconi and Vittorio Loreto and Domenico Parisi}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-1542357701&partnerID=65&md5=38349a61be5998bacd3283c61c6abce6 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000220065300004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2004}, date = {2004-01-01}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}, volume = {101}, pages = {2658--2663}, publisher = {National Academy of Sciences:2101 Constitution Avenue Northwest:Washington, DC 20418:(877)314-2253, (615)377-3322, EMAIL: subspnas@nas.edu, INTERNET: http://www.pnas.org, Fax: (615)377-0525}, abstract = {The investigation of community structures in networks is an important issue in many domains and disciplines. This problem is relevant for social tasks (objective analysis of relationships on the web), biological inquiries (functional studies in metabolic and protein networks), or technological problems (optimization of large infrastructures). Several types of algorithms exist for revealing the community structure in networks, but a general and quantitative definition of community is not implemented in the algorithms, leading to an intrinsic difficulty in the interpretation of the results without any additional nontopological information. In this article we deal with this problem by showing how quantitative definitions of community are implemented in practice in the existing algorithms. In this way the algorithms for the identification of the community structure become fully self-contained. Furthermore, we propose a local algorithm to detect communities which outperforms the existing algorithms with respect to computational cost, keeping the same level of reliability. The algorithm is tested on artificial and real-world graphs. In particular, we show how the algorithm applies to a network of scientific collaborations, which, for its size, cannot be attacked with the usual methods. This type of local algorithm could open the way to applications to large-scale technological and biological systems.}, keywords = {castellano, cecconi, complex_networks, loreto, parisi, radicchi}, pubstate = {published}, tppubtype = {article} } The investigation of community structures in networks is an important issue in many domains and disciplines. This problem is relevant for social tasks (objective analysis of relationships on the web), biological inquiries (functional studies in metabolic and protein networks), or technological problems (optimization of large infrastructures). Several types of algorithms exist for revealing the community structure in networks, but a general and quantitative definition of community is not implemented in the algorithms, leading to an intrinsic difficulty in the interpretation of the results without any additional nontopological information. In this article we deal with this problem by showing how quantitative definitions of community are implemented in practice in the existing algorithms. In this way the algorithms for the identification of the community structure become fully self-contained. Furthermore, we propose a local algorithm to detect communities which outperforms the existing algorithms with respect to computational cost, keeping the same level of reliability. The algorithm is tested on artificial and real-world graphs. In particular, we show how the algorithm applies to a network of scientific collaborations, which, for its size, cannot be attacked with the usual methods. This type of local algorithm could open the way to applications to large-scale technological and biological systems. |
Baronchelli, Andrea; Caglioti, Emanuele; Loreto, Vittorio; Pizzi, Elisabetta Dictionary based methods for information extraction Journal Article PHYSICA A, 342 , pp. 294–300, 2004. Links | BibTeX | Tag: baronchelli, caglioti, complexity, data_compression, information_theory, loreto, pizzi, zippers @article{b, title = {Dictionary based methods for information extraction}, author = {Andrea Baronchelli and Emanuele Caglioti and Vittorio Loreto and Elisabetta Pizzi}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-4544274009&partnerID=65&md5=c82c34dcc720c2c1feb9b2ead36b2b37 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000224217100043&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2004}, date = {2004-01-01}, journal = {PHYSICA A}, volume = {342}, pages = {294--300}, publisher = {Elsevier, Amsterdam}, keywords = {baronchelli, caglioti, complexity, data_compression, information_theory, loreto, pizzi, zippers}, pubstate = {published}, tppubtype = {article} } |
Castellano, Claudio; Federico cecconi, ; Loreto, Vittorio; Parisi, Domenico; Radicchi, Filippo Self-contained algorithms to detect communities in networks Journal Article THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, 38 , pp. 311–319, 2004. Links | BibTeX | Tag: castellano, cecconi, complex_networks, loreto, parisi, radicchi @article{b, title = {Self-contained algorithms to detect communities in networks}, author = {Claudio Castellano and Federico cecconi, and Vittorio Loreto and Domenico Parisi and Filippo Radicchi}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-2942534881&partnerID=65&md5=95c1d25779e19f22e6eacd483a47ec2b http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000221447300024&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2004}, date = {2004-01-01}, journal = {THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS}, volume = {38}, pages = {311--319}, publisher = {EDP Sciences, Springer Verlag Germany}, keywords = {castellano, cecconi, complex_networks, loreto, parisi, radicchi}, pubstate = {published}, tppubtype = {article} } |
Tosi, Patrizia; Rubeis, Valerio De; Loreto, Vittorio; Pietronero, Luciano Space-time combined correlation integral and earthquake interactions Journal Article ANNALS OF GEOPHYSICS, 47(6) , pp. 1849–1854,tosi,derubeis, 2004. Abstract | Links | BibTeX | Tag: clustering, loreto, pietronero, seismicity, statistical_physics @article{b, title = {Space-time combined correlation integral and earthquake interactions}, author = {Patrizia Tosi and Valerio De Rubeis and Vittorio Loreto and Luciano Pietronero}, url = {http://www.annalsofgeophysics.eu/index.php/annals/article/view/4404 http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=2&SID=Z16dIAaDdB7I@I66cOJ&page=1&doc=1}, year = {2004}, date = {2004-01-01}, journal = {ANNALS OF GEOPHYSICS}, volume = {47(6)}, pages = {1849--1854,tosi,derubeis}, publisher = {EDITRICE COMPOSITORI BOLOGNA}, abstract = {Scale invariant properties of seismicity argue for the presence of complex triggering mechanisms. We propose a new method, based on the space-time combined generalization of the correlation integral, that leads to a self-consistent visualization and analysis of both spatial and temporal correlations. The analysis has been applied on global medium-high seismicity. Results show that earthquakes do interact even on long distances and are correlated in time within defined spatial ranges varying over elapsed time. On that base we redefine the aftershock concept.}, keywords = {clustering, loreto, pietronero, seismicity, statistical_physics}, pubstate = {published}, tppubtype = {article} } Scale invariant properties of seismicity argue for the presence of complex triggering mechanisms. We propose a new method, based on the space-time combined generalization of the correlation integral, that leads to a self-consistent visualization and analysis of both spatial and temporal correlations. The analysis has been applied on global medium-high seismicity. Results show that earthquakes do interact even on long distances and are correlated in time within defined spatial ranges varying over elapsed time. On that base we redefine the aftershock concept. |
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