adjacent possible air traffic complexity complex_networks complex_systems creativity cuskley data_compression dynamical_systems evolutionary_dynamics gravino information_theory innovation_dynamics kreyon language_dynamics language_games local optimization loreto modeling monechi opinion_dynamics phylogeny relevant_literature servedio social_dynamics statistical_physics techno_social_systems transportation networks tria zippers
2012 |
Pompei, Simone; Loreto, Vittorio; Tria, Francesca Phylogenetic Properties of RNA Viruses (Journal Article) PLOS ONE, 7 , pp. e44849-1–e44849-10, 2012. (Abstract | Links | BibTeX | Tags: evolutionary_dynamics, loreto, phylogeny, tria) @article{b, title = {Phylogenetic Properties of RNA Viruses}, author = {Simone Pompei and Vittorio Loreto and Francesca Tria}, url = {http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0044849}, year = {2012}, date = {2012-01-01}, journal = {PLOS ONE}, volume = {7}, pages = {e44849-1--e44849-10}, abstract = {A new word, phylodynamics, was coined to emphasize the interconnection between phylogenetic properties, as observed for instance in a phylogenetic tree, and the epidemic dynamics of viruses, where selection, mediated by the host immune response, and transmission play a crucial role. The challenges faced when investigating the evolution of RNA viruses call for a virtuous loop of data collection, data analysis and modeling. This already resulted both in the collection of massive sequences databases and in the formulation of hypotheses on the main mechanisms driving qualitative differences observed in the (reconstructed) evolutionary patterns of different RNA viruses. Qualitatively, it has been observed that selection driven by the host immune response induces an uneven survival ability among co-existing strains. As a consequence, the imbalance level of the phylogenetic tree is manifestly more pronounced if compared to the case when the interaction with the host immune system does not play a central role in the evolutive dynamics. While many imbalance metrics have been introduced, reliable methods to discriminate in a quantitative way different level of imbalance are still lacking. In our work, we reconstruct and analyze the phylogenetic trees of six RNA viruses, with a special emphasis on the human Influenza A virus, due to its relevance for vaccine preparation as well as for the theoretical challenges it poses due to its peculiar evolutionary dynamics. We focus in particular on topological properties. We point out the limitation featured by standard imbalance metrics, and we introduce a new methodology with which we assign the correct imbalance level of the phylogenetic trees, in agreement with the phylodynamics of the viruses. Our thorough quantitative analysis allows for a deeper understanding of the evolutionary dynamics of the considered RNA viruses, which is crucial in order to provide a valuable framework for a quantitative assessment of theoretical predictions.}, keywords = {evolutionary_dynamics, loreto, phylogeny, tria}, pubstate = {published}, tppubtype = {article} } A new word, phylodynamics, was coined to emphasize the interconnection between phylogenetic properties, as observed for instance in a phylogenetic tree, and the epidemic dynamics of viruses, where selection, mediated by the host immune response, and transmission play a crucial role. The challenges faced when investigating the evolution of RNA viruses call for a virtuous loop of data collection, data analysis and modeling. This already resulted both in the collection of massive sequences databases and in the formulation of hypotheses on the main mechanisms driving qualitative differences observed in the (reconstructed) evolutionary patterns of different RNA viruses. Qualitatively, it has been observed that selection driven by the host immune response induces an uneven survival ability among co-existing strains. As a consequence, the imbalance level of the phylogenetic tree is manifestly more pronounced if compared to the case when the interaction with the host immune system does not play a central role in the evolutive dynamics. While many imbalance metrics have been introduced, reliable methods to discriminate in a quantitative way different level of imbalance are still lacking. In our work, we reconstruct and analyze the phylogenetic trees of six RNA viruses, with a special emphasis on the human Influenza A virus, due to its relevance for vaccine preparation as well as for the theoretical challenges it poses due to its peculiar evolutionary dynamics. We focus in particular on topological properties. We point out the limitation featured by standard imbalance metrics, and we introduce a new methodology with which we assign the correct imbalance level of the phylogenetic trees, in agreement with the phylodynamics of the viruses. Our thorough quantitative analysis allows for a deeper understanding of the evolutionary dynamics of the considered RNA viruses, which is crucial in order to provide a valuable framework for a quantitative assessment of theoretical predictions. |
Marchetti, Riccardo; Taloni, Alessandro; Caglioti, Emanuele; Loreto, Vittorio; Pietronero, Luciano Stationary Growth and Unique Invariant Harmonic Measure of Cylindrical Diffusion Limited Aggregation (Journal Article) PHYSICAL REVIEW LETTERS, 109 , 2012. (Abstract | Links | BibTeX | Tags: complex_systems, loreto) @article{b, title = {Stationary Growth and Unique Invariant Harmonic Measure of Cylindrical Diffusion Limited Aggregation}, author = {Riccardo Marchetti and Alessandro Taloni and Emanuele Caglioti and Vittorio Loreto and Luciano Pietronero}, url = {http://prl.aps.org/}, year = {2012}, date = {2012-01-01}, journal = {PHYSICAL REVIEW LETTERS}, volume = {109}, publisher = {AMER PHYSICAL SOC}, abstract = {We prove that the harmonic measure is stationary, unique, and invariant on the interface of diffusion limited aggregation (DLA) growing on a cylinder surface. We provide a detailed theoretical analysis puzzling together multiscaling, multifractality, and conformal invariance, supported by extensive numerical simulations of clusters built using conformal mappings and on a lattice. The growth properties of the active and frozen zones are clearly elucidated. We show that the unique scaling exponent characterizing the stationary growth is the DLA fractal dimension.}, keywords = {complex_systems, loreto}, pubstate = {published}, tppubtype = {article} } We prove that the harmonic measure is stationary, unique, and invariant on the interface of diffusion limited aggregation (DLA) growing on a cylinder surface. We provide a detailed theoretical analysis puzzling together multiscaling, multifractality, and conformal invariance, supported by extensive numerical simulations of clusters built using conformal mappings and on a lattice. The growth properties of the active and frozen zones are clearly elucidated. We show that the unique scaling exponent characterizing the stationary growth is the DLA fractal dimension. |
Mukherjee, Animesh; Loreto, Vittorio; Tria, Francesca Why are basic color names "basic"? (Journal Article) ADVANCES IN COMPLEX SYSTEM, 15 , pp. 1150016–1150028, 2012. (Abstract | Links | BibTeX | Tags: language_dynamics, loreto, tria) @article{b, title = {Why are basic color names "basic"?}, 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}, 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, 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. (BibTeX | Tags: language_dynamics, loreto, tria) @article{b, title = {Linguistica in Silico}, author = {Vittorio Loreto and Francesca Tria}, 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 | Tags: language_dynamics, loreto, 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}, 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 = {language_dynamics, loreto, 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 | Tags: language_dynamics, loreto, 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}, year = {2011}, date = {2011-01-01}, journal = {PLOS ONE}, volume = {6(2)}, publisher = {San Francisco, CA: Public Library of Science}, keywords = {language_dynamics, loreto, 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 | Tags: loreto) @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 = {loreto}, 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 "Modeling the cultural evolution of language" by Luc Steels (Journal Article) PHYSICS OF LIFE REVIEWS, 8 , pp. 371–372, 2011. (Links | BibTeX | Tags: language_dynamics, loreto, tria) @article{b, title = {In Silico Linguistics Comment on "Modeling the cultural evolution of language" by Luc Steels}, 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}, 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} } |
Pompei, Simone; Tria, Francesca; Loreto, Vittorio On the accuracy of language trees (Journal Article) PLOS ONE, 6(6) , 2011. (Links | BibTeX | Tags: evolutionary_dynamics, loreto, phylogeny, 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2011/POMPEI_PLOS_ONE_2011.pdf}, 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, 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 | Tags: language_dynamics, loreto, 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}, year = {2011}, date = {2011-01-01}, journal = {JOURNAL OF STATISTICAL MECHANICS: THEORY AND EXPERIMENT}, volume = {P04006}, publisher = {Bristol : IOP Publishing}, keywords = {language_dynamics, loreto, tria}, pubstate = {published}, tppubtype = {article} } |
Cicali, Claudio; Tria, Francesca; Servedio, Vito DP; Gravino, Pietro; Loreto, Vittorio; Warglien, Massimo; Paolacci, Gabriele Experimental tribe: a general platform for web-gaming and social computation (Inproceeding) Second Workshop on Computational Social Science and the Wisdom of Crowds publisher=Citeseer, 2011. (Links | BibTeX | Tags: gravino, social_computation, XTribe) @inproceedings{cicaliexperimental, title = {Experimental tribe: a general platform for web-gaming and social computation}, author = {Cicali, Claudio and Tria, Francesca and Servedio, Vito DP and Gravino, Pietro and Loreto, Vittorio and Warglien, Massimo and Paolacci, Gabriele}, url = {https://people.cs.umass.edu/~wallach/workshops/nips2011css/papers/Cicali.pdf}, year = {2011}, date = {2011-01-01}, booktitle = {Second Workshop on Computational Social Science and the Wisdom of Crowds publisher=Citeseer}, keywords = {gravino, social_computation, XTribe}, pubstate = {published}, tppubtype = {inproceedings} } |
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 | Tags: evolutionary_dynamics, loreto, 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2010/Tria_Mol_Biol_Evol_2010.pdf}, year = {2010}, date = {2010-01-01}, journal = {MOLECULAR BIOLOGY AND EVOLUTION}, volume = {27 (11)}, pages = {2587--2595}, keywords = {evolutionary_dynamics, loreto, 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 | Tags: evolutionary_dynamics, loreto, 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 = {evolutionary_dynamics, loreto, 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 | Tags: evolutionary_dynamics, loreto, phylogeny, 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2010/POMPEI_M3A_2010.pdf}, 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 = {evolutionary_dynamics, loreto, phylogeny, 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 | Tags: language_dynamics, loreto) @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://samarcanda.phys.uniroma1.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 = {language_dynamics, loreto}, 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. |
Loreto, Vittorio; Baronchelli, Andrea; Puglisi, Andrea Mathematical modelling and language games (Incollection) (Eds), Stefano Nolfi; Maro Mirolli (Ed.): Evolution of Communication and Language in Embodied Agents, pp. 263–283, Springer-Verlag, 2010. (BibTeX | Tags: language_dynamics, loreto) @incollection{b, title = {Mathematical modelling and language games}, author = {Vittorio Loreto and Andrea Baronchelli and Andrea Puglisi}, editor = {Stefano Nolfi; Maro Mirolli (Eds)}, year = {2010}, date = {2010-01-01}, booktitle = {Evolution of Communication and Language in Embodied Agents}, pages = {263--283}, publisher = {Springer-Verlag}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {incollection} } |
Steels, Luc; Loreto, Vittorio Modeling the Formation of Language in Embodied Agents: Conclusions and Future Research (Incollection) Mirolli, Eds. Nolfi; (Ed.): Evolution of Communication and Language in Embodied Agents,, pp. 283–288, Springer Berlin Heidelberg, Berlin, Heidelberg, 2010. (Abstract | BibTeX | Tags: language_dynamics, loreto) @incollection{b, title = {Modeling the Formation of Language in Embodied Agents: Conclusions and Future Research}, author = {Luc Steels and Vittorio Loreto}, editor = {Eds. S. Nolfi; M. Mirolli}, year = {2010}, date = {2010-01-01}, booktitle = {Evolution of Communication and Language in Embodied Agents,}, pages = {283--288}, publisher = {Springer Berlin Heidelberg}, address = {Berlin, Heidelberg}, abstract = {This chapter draws some conclusions from the computational and mathematical models of emergent symbolic communication systems reported in the earlier chapters. It also strongly pleads for a stronger interaction between linguistics and other human sciences studying similar issues.}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {incollection} } This chapter draws some conclusions from the computational and mathematical models of emergent symbolic communication systems reported in the earlier chapters. It also strongly pleads for a stronger interaction between linguistics and other human sciences studying similar issues. |
Loreto, Vittorio; Capocci, Andrea; Servedio, Vito Partecipatory sensing in policy modelling: a complex systems view (Incollection) CROSSROAD Project, 2010. (Links | BibTeX | Tags: citizen_science, loreto, servedio) @incollection{b, title = {Partecipatory sensing in policy modelling: a complex systems view}, author = {Vittorio Loreto and Andrea Capocci and Vito D.P. Servedio}, url = {http://crossroad.epu.ntua.gr/files/2010/04/37_Participatory_sensing_policy_modeling.pdf}, year = {2010}, date = {2010-01-01}, booktitle = {CROSSROAD Project}, keywords = {citizen_science, loreto, servedio}, pubstate = {published}, tppubtype = {incollection} } |
Loreto, Vittorio Theoretical Tools in Modeling Communication and Language Dynamics (Incollection) Mirolli, Eds. Nolfi; (Ed.): Evolution of Communication and Language in Embodied Agents, pp. 67–81, Springer-Verlag, Berlin-Heidelberg, 2010. (Abstract | BibTeX | Tags: language_dynamics, loreto) @incollection{b, title = {Theoretical Tools in Modeling Communication and Language Dynamics}, author = {Vittorio Loreto}, editor = {Eds. S. Nolfi; M. Mirolli}, year = {2010}, date = {2010-01-01}, booktitle = {Evolution of Communication and Language in Embodied Agents}, pages = {67--81}, publisher = {Springer-Verlag}, address = {Berlin-Heidelberg}, abstract = {Statistical physics has proven to be a very fruitful framework to describe phenomena outside the realm of traditional physics. In social phenomena, the basic constituents are not particles but humans and every individual interacts with a limited number of peers, usually negligible compared to the total number of people in the system. In spite of that, human societies are characterized by stunning global regularities that naturally call for a statistical physics approach to social behavior, i.e., the attempt to understand regularities at large scale as collective effects of the interaction among single individuals, considered as relatively simple entities. This is the paradigm of Complex Systems: an assembly of many interacting (and simple) units whose collective behavior is not trivially deducible from the knowledge of the rules governing their mutual interactions. In this chapter we review the main theoretical concepts and tools that physics can borrow to socially-motivated problems. Despite their apparent diversity, most research lines in social dynamics are actually closely connected from the point of view of both the methodologies employed and, more importantly, of the general phenomenological questions, e.g., what are the fundamental interaction mechanisms leading to the emergence of consensus on an issue, a shared culture, a common language or a collective motion? © 2010 Springer-Verlag Berlin Heidelberg.}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {incollection} } Statistical physics has proven to be a very fruitful framework to describe phenomena outside the realm of traditional physics. In social phenomena, the basic constituents are not particles but humans and every individual interacts with a limited number of peers, usually negligible compared to the total number of people in the system. In spite of that, human societies are characterized by stunning global regularities that naturally call for a statistical physics approach to social behavior, i.e., the attempt to understand regularities at large scale as collective effects of the interaction among single individuals, considered as relatively simple entities. This is the paradigm of Complex Systems: an assembly of many interacting (and simple) units whose collective behavior is not trivially deducible from the knowledge of the rules governing their mutual interactions. In this chapter we review the main theoretical concepts and tools that physics can borrow to socially-motivated problems. Despite their apparent diversity, most research lines in social dynamics are actually closely connected from the point of view of both the methodologies employed and, more importantly, of the general phenomenological questions, e.g., what are the fundamental interaction mechanisms leading to the emergence of consensus on an issue, a shared culture, a common language or a collective motion? © 2010 Springer-Verlag Berlin Heidelberg. |
Tria, Francesca; Caglioti, Emanuele; Loreto, Vittorio; Pompei, Simone A fast noise reduction driven distance-based phylogenetic algorithm (Inproceeding) Hamid R. Arabnia Quoc-Nam Tran, Rui Chang Matthew He Andy Marsh Ashu Solo Jack Yang (Eds.) (Ed.): Proceedings of BIOCOMP 2010 (2010), pp. 375–380, CSREA Press 2010, 2010. (Links | BibTeX | Tags: loreto, phylogeny, tria) @inproceedings{b, title = {A fast noise reduction driven distance-based phylogenetic algorithm}, author = {Francesca Tria and Emanuele Caglioti and Vittorio Loreto and Simone Pompei}, editor = {Hamid R. Arabnia, Quoc-Nam Tran, Rui Chang, Matthew He, Andy Marsh, Ashu M. G. Solo, Jack Y. Yang (Eds.)}, url = {http://dblp.uni-trier.de}, year = {2010}, date = {2010-01-01}, booktitle = {Proceedings of BIOCOMP 2010 (2010)}, pages = {375--380}, publisher = {CSREA Press 2010}, keywords = {loreto, phylogeny, tria}, pubstate = {published}, tppubtype = {inproceedings} } |
Baronchelli, Andrea; Gong, Tao; Loreto, Vittorio; Puglisi, Andrea ON THE ORIGIN OF UNIVERSAL CATEGORIZATION PATTERNS: AN IN SILICA EXPERIMENT (Inproceeding) The Evolution of Language - Proceedings of the 8th International Conference (EVOLANG8), pp. 365–366, 2010. (Links | BibTeX | Tags: language_dynamics, loreto) @inproceedings{b, title = {ON THE ORIGIN OF UNIVERSAL CATEGORIZATION PATTERNS: AN IN SILICA EXPERIMENT}, author = {Andrea Baronchelli and Tao Gong and Vittorio Loreto and Andrea Puglisi}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000278248800047&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a}, year = {2010}, date = {2010-01-01}, booktitle = {The Evolution of Language - Proceedings of the 8th International Conference (EVOLANG8)}, pages = {365--366}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {inproceedings} } |
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 | Tags: loreto, 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://samarcanda.phys.uniroma1.it/vittorioloreto/PNAS-2009-Cattuto-10511-5.pdf}, 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 = {loreto, 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 | Tags: 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2009/Castello_EurPhysJourB_2009.pdf}, 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 = {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 | Tags: 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2009/RevModPhys_81_000591.pdf}, 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 = {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. |
Baronchelli, Andrea; Cattuto, Ciro; Loreto, Vittorio; Puglisi, Andrea Complex systems approach to the emergence of language (Incollection) Wang, James Minett; William (Ed.): Language, Evolution and the Brain, pp. 141–178, City University of Hong Kong Press, 2009. (BibTeX | Tags: language_dynamics, loreto) @incollection{b, title = {Complex systems approach to the emergence of language}, author = {Andrea Baronchelli and Ciro Cattuto and Vittorio Loreto and Andrea Puglisi}, editor = {James Minett; William S-.Y. Wang}, year = {2009}, date = {2009-01-01}, booktitle = {Language, Evolution and the Brain}, pages = {141--178}, publisher = {City University of Hong Kong Press}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {incollection} } |
Loreto, Vittorio; Cattuto, Ciro La scienza del Web sociale (Incollection) Spaziante, Eds. (Ed.): Conoscere la complessita' : Viaggio tra le scienze, Bruno Mondadori, Torino, 2009. (BibTeX | Tags: complex_systems, loreto) @incollection{b, title = {La scienza del Web sociale}, author = {Vittorio Loreto and Ciro Cattuto}, editor = {Eds. A. Spaziante}, year = {2009}, date = {2009-01-01}, booktitle = {Conoscere la complessita' : Viaggio tra le scienze}, publisher = {Bruno Mondadori}, address = {Torino}, keywords = {complex_systems, loreto}, pubstate = {published}, tppubtype = {incollection} } |
Capocci, Andrea; Baldassarri, Andrea; Servedio, Vito; Loreto, Vittorio Statistical properties of inter-arrival times distribution in social tagging systems (Inproceeding) Proceeding HT '09 Proceedings of the 20th ACM conference on Hypertext and hypermedia, 2009. (Links | BibTeX | Tags: loreto, servedio, statistical_physics, techno_social_systems) @inproceedings{b, title = {Statistical properties of inter-arrival times distribution in social tagging systems}, author = {Andrea Capocci and Andrea Baldassarri and Vito D.P. Servedio and Vittorio Loreto}, url = {http://dl.acm.org/citation.cfm?doid=1557914.1557955 http://www.scopus.com/inward/record.url?eid=2-s2.0-70450189061&partnerID=65&md5=b3856af34776847bb54edf90426aae20 ttp://www.tagora-project.eu/wp-content/2009/09/p239-capocci.pdf}, year = {2009}, date = {2009-01-01}, booktitle = {Proceeding HT '09 Proceedings of the 20th ACM conference on Hypertext and hypermedia}, keywords = {loreto, servedio, statistical_physics, techno_social_systems}, pubstate = {published}, tppubtype = {inproceedings} } |
Loreto, Vittorio; Capocci, Andrea Tagging dynamics in online communities (Inproceeding) pp. 391–392, 2009. (Links | BibTeX | Tags: loreto, techno_social_systems) @inproceedings{b, title = {Tagging dynamics in online communities}, author = {Vittorio Loreto and Andrea Capocci}, url = {http://dl.acm.org/citation.cfm?id=1558005&CFID=126320319&CFTOKEN=51108115, http://www.scopus.com/inward/record.url?eid=2-s2.0-70450196589&partnerID=65&md5=8b403625633ac53f398cda2c011d2cb5}, year = {2009}, date = {2009-01-01}, pages = {391--392}, keywords = {loreto, techno_social_systems}, pubstate = {published}, tppubtype = {inproceedings} } |
2008 |
Gong, Tao; Puglisi, Andrea; Loreto, Vittorio; Wang, William Conventionalization of linguistic knowledge under communicative constraints (Journal Article) BIOLOGICAL THEORY, 3 , pp. 154–163, 2008. (BibTeX | Tags: language_dynamics, loreto) @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 = {language_dynamics, loreto}, 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 | Tags: language_dynamics, loreto) @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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2008/Puglisi_PNAS_2008.pdf}, 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 = {language_dynamics, loreto}, 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 | Tags: loreto, statistical_physics) @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, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Cattuto, Ciro; Baldassarri, Andrea; Servedio, Vito; Loreto, Vittorio Emergent Community Structure in Social Tagging Systems (Journal Article) ADVANCES IN COMPLEX SYSTEM, 11 , pp. 597–608, 2008. (Links | BibTeX | Tags: 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://www.tagora-project.eu/wp-content/2009/09/cattuto_acs2008.pdf}, 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 = {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 | Tags: language_dynamics, loreto) @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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2008/Baronchelli_arXiv_0803.0398v1_2008.pdf}, 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 = {language_dynamics, loreto}, 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 | Tags: loreto, 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}, keywords = {loreto, 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 | Tags: loreto, statistical_physics) @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}, 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 = {loreto, statistical_physics}, 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. |
Gong, Tao; Puglisi, Andrea; Loreto, Vittorio; Wang, William Conventionalization of linguistic categories under simple communicative constraints (Inproceeding) Proceedings of 2008 IEEE Congress on Evolutionary Computation, pp. 1686–1693, 2008. (Abstract | Links | BibTeX | Tags: language_dynamics, loreto) @inproceedings{b, title = {Conventionalization of linguistic categories under simple communicative constraints}, author = {Tao Gong and Andrea Puglisi and Vittorio Loreto and William S.-Y. Wang}, url = {http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4631017, http://www.scopus.com/inward/record.url?eid=2-s2.0-55749088202&partnerID=65&md5=3e30884ac215d834b6a446a0945bc0d5}, year = {2008}, date = {2008-01-01}, booktitle = {Proceedings of 2008 IEEE Congress on Evolutionary Computation}, pages = {1686--1693}, abstract = {The language game approach is widely adopted to study conventionalization of linguistic knowledge. Most of contemporary models concentrate on the dynamics of language games in random or predefined social structures, but neglect the role of communicative constraints. This paper adopts one form of language games, the category game, to discuss whether some simple distance-related communicative constraint may affect the conventionalization of linguistic categories. By comparing the simulation results with those based on another form of language games, the naming game, we point out some essential differences between these two games which cause their distinct performances under the same communicative constraint. This study fills the gap between the dynamics of language games in random structures and that in complex networks, and suggests that internal properties of language games may reversely influence communicative constraints and social structures.}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {inproceedings} } The language game approach is widely adopted to study conventionalization of linguistic knowledge. Most of contemporary models concentrate on the dynamics of language games in random or predefined social structures, but neglect the role of communicative constraints. This paper adopts one form of language games, the category game, to discuss whether some simple distance-related communicative constraint may affect the conventionalization of linguistic categories. By comparing the simulation results with those based on another form of language games, the naming game, we point out some essential differences between these two games which cause their distinct performances under the same communicative constraint. This study fills the gap between the dynamics of language games in random structures and that in complex networks, and suggests that internal properties of language games may reversely influence communicative constraints and social structures. |
2007 |
Loreto, Vittorio; Cattuto, Ciro; Baldassarri, Andrea Information dynamics in web-based social systems (Journal Article) Position paper for the Complexity Research Projects (CRP) Forum, Dresden, Germany, 6th October, 2007. (Links | BibTeX | Tags: loreto, techno_social_systems) @article{Loreto2007, title = {Information dynamics in web-based social systems}, author = {Vittorio Loreto and Ciro Cattuto and Andrea Baldassarri}, url = {http://www.tagora-project.eu/wp-content/2008/06/position_paper_2.pdf}, year = {2007}, date = {2007-10-06}, booktitle = {Information dynamics in web-based social systems}, journal = {Position paper for the Complexity Research Projects (CRP) Forum, Dresden, Germany, 6th October}, keywords = {loreto, techno_social_systems}, pubstate = {published}, tppubtype = {article} } |
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 | Tags: 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2007/Barrat_Chaos_2007.pdf}, 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 = {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 | Tags: loreto, 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 = {loreto, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Loreto, Vittorio; Steels, Luc Emergence of Language (Journal Article) NATURE PHYSICS, 3 , pp. 758–760, 2007. (Links | BibTeX | Tags: language_dynamics, loreto) @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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2007/Loreto_NaturePhys_2007.pdf}, year = {2007}, date = {2007-01-01}, journal = {NATURE PHYSICS}, volume = {3}, pages = {758--760}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Cattuto, Ciro; Schmitz, Christoph; Baldassarri, Andrea; Servedio, Vito; Loreto, Vittorio; Hotho, Andreas; Grahl, Martin; Stumme, Gerd Network properties of folksonomies (Journal Article) AI COMMUNICATIONS, 20 , pp. 245–262, 2007. (Links | BibTeX | Tags: loreto, servedio, 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}, url = {http://www.tagora-project.eu/wp-content/2007/12/cattuto_aicom2007.pdf}, 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 = {loreto, servedio, 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 | Tags: 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2007/Baronchelli_PhysRevE_2007.pdf}, 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 = {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 | Tags: loreto, 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 = {loreto, statistical_physics}, pubstate = {published}, tppubtype = {article} } |
Berganza, Miguel Ibanez De; Ferrero, Ezequiel; 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 | Tags: loreto, 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 = {loreto, 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 | Tags: loreto, 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://www.tagora-project.eu/wp-content/2007/05/cattuto2007pnas.pdf}, 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}, 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 = {loreto, 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 | Tags: 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2007/Baronchelli_EPJSpecialTopics_2007.pdf}, year = {2007}, date = {2007-01-01}, journal = {THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS}, volume = {143}, pages = {233--235}, publisher = {Elsevier Science Limited}, keywords = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |
Cattuto, Ciro; Baldassarri, Andrea; Servedio, Vito; Loreto, Vittorio Vocabulary growth in collaborative tagging systems (Journal Article) 2007. (BibTeX | Tags: 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 = {loreto, servedio, techno_social_systems}, pubstate = {published}, tppubtype = {article} } |
Szomszor, Martin; Cattuto, Ciro; Alani, Arith; O'Hara, Ken; Baldassarri, Andrea; Loreto, Vittorio; Servedio, Vito Folksonomies, the Semantic Web, and Movie Recommendation (Inproceeding) Bridging the Gap between Semantic Web and Web 2.0 at the 4th European Semantic Web Conference ESWC 2007 proceedings, Innsbruck, Austria, June 7, (2007), 2007. (Links | BibTeX | Tags: loreto, servedio, techno_social_systems) @inproceedings{b, title = {Folksonomies, the Semantic Web, and Movie Recommendation}, author = {Martin Szomszor and Ciro Cattuto and Arith Alani and Ken O'Hara and Andrea Baldassarri and Vittorio Loreto and Vito D.P. Servedio}, url = {http://eprints.soton.ac.uk/264007/}, year = {2007}, date = {2007-01-01}, booktitle = {Bridging the Gap between Semantic Web and Web 2.0 at the 4th European Semantic Web Conference ESWC 2007 proceedings, Innsbruck, Austria, June 7, (2007)}, keywords = {loreto, servedio, techno_social_systems}, pubstate = {published}, tppubtype = {inproceedings} } |
2006 |
Cattuto, Ciro; Loreto, Vittorio; Servedio, Vito A Yule-Simon process with long-term memory (Journal Article) EUROPHYSICS LETTERS, 76 , pp. 208–214, 2006. (Links | BibTeX | Tags: 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://www.tagora-project.eu/wp-content/2007/05/cattuto2006yule.pdf}, 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 = {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 | Tags: 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://samarcanda.phys.uniroma1.it/vittorioloreto/PAPERS/2006/Dall%27Asta_EurophysLett_2006.pdf}, 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 = {language_dynamics, loreto}, pubstate = {published}, tppubtype = {article} } |