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In such a context, when an agent is not capable to perform a reliable choice then, like real social communities, it can ask information to other agents it considers as trustworthy. In order to support agents in their partner choices, we conceived a local trust model, based on reliability and reputation measures coming from its ego-network, adopted to partition the agents in groups by exploiting trust relationships to allow agents to be associated with the most reliable partners. To this aim, we designed an algorithm to form agent groups by exploiting available local trust measures and the results obtained in a simulated scenario confirmed the potential advantages of this approach.<\/jats:p>","DOI":"10.3233\/ia-190039","type":"journal-article","created":{"date-parts":[[2020,9,22]],"date-time":"2020-09-22T18:59:59Z","timestamp":1600801199000},"page":"33-44","source":"Crossref","is-referenced-by-count":1,"title":["Using local trust measures to form agent CoT groups1"],"prefix":"10.1177","volume":"14","author":[{"given":"Giancarlo","family":"Fortino","sequence":"first","affiliation":[{"name":"DIMES, University of Calabria, 87036 Rende (CS), Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lidia","family":"Fotia","sequence":"additional","affiliation":[{"name":"DICEAM, University Mediterranea of Reggio Calabria, Loc. 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