{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T05:48:43Z","timestamp":1777441723850,"version":"3.51.4"},"reference-count":30,"publisher":"Maximum Academic Press","issue":"1","license":[{"start":{"date-parts":[[2012,2,22]],"date-time":"2012-02-22T00:00:00Z","timestamp":1329868800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Knowledge Engineering Review"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>In this paper, we model knowledge dynamics in agents\u2019 belief bases in a collaborative multi-agent system (MAS). Four change operators are introduced: expansion, contraction, prioritized revision, and non-prioritized revision. For all of them, both constructive definitions and an axiomatic characterization by representation theorems are given. We formally justify minimal change, consistency maintenance, and non-prioritization principles. These operators are based on an epistemic model for multi-source belief revision in which a rational way to weigh the beliefs using a credibility order among agents is developed. The defined operators can be seen as skills added to the agents improving the collective reasoning of a MAS.<\/jats:p>","DOI":"10.1017\/s0269888912000021","type":"journal-article","created":{"date-parts":[[2012,2,22]],"date-time":"2012-02-22T09:45:01Z","timestamp":1329903901000},"page":"87-114","source":"Crossref","is-referenced-by-count":11,"title":["Modeling knowledge dynamics in multi-agent systems based on informants"],"prefix":"10.48130","volume":"27","author":[{"given":"Luciano H.","family":"Tamargo","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alejandro J.","family":"Garc\u00eda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marcelo A.","family":"Falappa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guillermo R.","family":"Simari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"27968","published-online":{"date-parts":[[2012,2,22]]},"reference":[{"key":"S0269888912000021_ref30","unstructured":"Tamargo L. 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