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Within the presented model, each agent has a private opinion and a public one that shares to the group. There are two kinds of interactions between agents. The first kind represent interactions with the neighbors while the other represents the attitude of an agent to the overall public available information. Links between agents evolve as a combination of the public and private information available. Friendship is defined using a fitness function according to the strength of the agent\u2019s bonds, clustering coefficient, betweenness centrality and degree. Enmity is defined as very negative links. The model allows us to reproduce the distribution of mentions for friends and foes observed in the experiments, as well as the topology of the directed networks.<\/jats:p>","DOI":"10.1371\/journal.pone.0298791","type":"journal-article","created":{"date-parts":[[2024,2,27]],"date-time":"2024-02-27T18:24:26Z","timestamp":1709058266000},"page":"e0298791","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":1,"title":["Modelling the creation of friends and foes groups in small real social networks"],"prefix":"10.1371","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6908-161X","authenticated-orcid":true,"given":"Alberto","family":"Garc\u00eda-Rodr\u00edguez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tzipe","family":"Govezensky","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gerardo G.","family":"Naumis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael A.","family":"Barrio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2024,2,27]]},"reference":[{"key":"pone.0298791.ref001","unstructured":"United Nations Department of Economic, Social Affairs. 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