79031 20230914083227.0 doi 10.3389/fphy.2019.00058 sideral 111567 ART-2019-111567 eng Maciel Cardoso, F. Universidad de Zaragoza (orcid)0000-0002-2789-9250 Topical Alignment in Online Social Systems 2019 Access copy available to the general public Unrestricted Understanding the dynamics of social interactions is crucial to comprehend human behavior. The emergence of online social media has enabled access to data regarding people relationships at a large scale. Twitter, specifically, is an information oriented network, with users sharing and consuming information. In this work, we study whether users tend to be in contact with people interested in similar topics, i.e., if they are topically aligned. To do so, we propose an approach based on the use of hashtags to extract information topics from Twitter messages and model users' interests. Our results show that, on average, users are connected with other users similar to them. Furthermore, we show that topical alignment provides interesting information that can eventually allow inferring users' connectivity. Our work, besides providing a way to assess the topical similarity of users, quantifies topical alignment among individuals, contributing to a better understanding of how complex social systems are structured. info:eu-repo/grantAgreement/EC/FP7/317532/EU/Foundational Research on MULTIlevel comPLEX networks and systems/MULTIPLEX info:eu-repo/grantAgreement/ES/MINECO/FIS2017-87519-P info:eu-repo/grantAgreement/ES/MINECO/MDM-2017-0711 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.638 2019 PHYSICS, MULTIDISCIPLINARY 30 / 84 = 0.357 2019 Q2 T2 0.597 2019 Mathematical Physics 2019 Q2 Materials Science (miscellaneous) 2019 Q2 Physics and Astronomy (miscellaneous) 2019 Q2 Physical and Theoretical Chemistry 2019 Q2 Biophysics 2019 Q3 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Meloni, S. (orcid)0000-0001-6202-3302 Santanche, A. Moreno, Y. Universidad de Zaragoza (orcid)0000-0002-0895-1893 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 7 (2019), 58 [12 pp] Front. phys. FRONTIERS IN PHYSICS 2296-424X 443557 http://zaguan.unizar.es/record/79031/files/texto_completo.pdf Versión publicada 11304 http://zaguan.unizar.es/record/79031/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:79031 articulos driver 2023-09-13-10:43:24 ARTICLE