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Technol."],"published-print":{"date-parts":[[2020,4,30]]},"abstract":"<jats:p>\n            Assessing whether an agent has abandoned a goal or is actively pursuing it is important when multiple agents are trying to achieve joint goals, or when agents commit to achieving goals for each other. Making such a determination for a single goal by observing only plan traces is not trivial, as agents often deviate from optimal plans for various reasons, including the pursuit of multiple goals or the inability to act optimally. In this article, we develop an approach based on domain independent heuristics from automated planning, landmarks, and fact partitions to identify sub-optimal action steps\u2014with respect to a plan\u2014within a fully observable plan execution trace. Such capability is very important in domains where multiple agents cooperate and delegate tasks among themselves, such as through\n            <jats:italic>social commitments<\/jats:italic>\n            , and need to ensure that a delegating agent can infer whether or not another agent is actually progressing towards a delegated task. We demonstrate how a creditor can use our technique to determine\u2014by observing a trace\u2014whether a debtor is honouring a commitment. We empirically show, for a number of representative domains, that our approach infers sub-optimal action steps with very high accuracy and detects commitment abandonment in nearly all cases.\n          <\/jats:p>","DOI":"10.1145\/3372119","type":"journal-article","created":{"date-parts":[[2020,2,24]],"date-time":"2020-02-24T18:22:16Z","timestamp":1582568536000},"page":"1-26","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Using Sub-Optimal Plan Detection to Identify Commitment Abandonment in Discrete Environments"],"prefix":"10.1145","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3600-3348","authenticated-orcid":false,"given":"Ramon Fraga","family":"Pereira","sequence":"first","affiliation":[{"name":"PUCRS, Porto Alegre, Brazil"}]},{"given":"Nir","family":"Oren","sequence":"additional","affiliation":[{"name":"University of Aberdeen, Aberdeen, Scotland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3549-6168","authenticated-orcid":false,"given":"Felipe","family":"Meneguzzi","sequence":"additional","affiliation":[{"name":"PUCRS, Porto Alegre, Brazil"}]}],"member":"320","published-online":{"date-parts":[[2020,1,10]]},"reference":[{"key":"e_1_2_1_1_1","first-page":"47","article-title":"The AIPS\u201900 planning competition","volume":"22","author":"Bacchus Fahiem","year":"2001","unstructured":"Fahiem Bacchus . 2001 . 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