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Syst."],"published-print":{"date-parts":[[2024,6,30]]},"abstract":"<jats:p>Approaches that support the decision-making of self-adaptive and autonomous systems (SAS) often consider an idealized situation where (i) the system\u2019s state is treated as fully observable by the monitoring infrastructure, and (ii) adaptation actions are assumed to have known, deterministic effects over the system. However, in practice, the system\u2019s state may not be fully observable, and the adaptation actions may produce unexpected effects due to uncertain factors. This article presents a novel probabilistic approach to quantify the uncertainty associated with the effects of adaptation actions on the state of a SAS. Supported by Bayesian inference and POMDPs (Partially-Observable Markov Decision Processes), these effects are translated into the satisfaction levels of the non-functional requirements (NFRs) to, therefore, drive the decision-making. The approach has been applied to two substantial case studies from the networking and Internet of Things (IoT) domains, using two different POMDP solvers. The results show that the approach delivers statistically significant improvements in supporting decision-making for SAS.<\/jats:p>","DOI":"10.1145\/3643889","type":"journal-article","created":{"date-parts":[[2024,2,9]],"date-time":"2024-02-09T11:53:48Z","timestamp":1707479628000},"page":"1-44","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Decision Making for Self-Adaptation Based on Partially Observable Satisfaction of Non-Functional Requirements"],"prefix":"10.1145","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2915-0830","authenticated-orcid":false,"given":"Luis","family":"Garcia","sequence":"first","affiliation":[{"name":"SEA Group, Aston University, Birmingham, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8885-7687","authenticated-orcid":false,"given":"Huma","family":"Samin","sequence":"additional","affiliation":[{"name":"AIHS Group, Durham University, Durham, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6895-1636","authenticated-orcid":false,"given":"Nelly","family":"Bencomo","sequence":"additional","affiliation":[{"name":"AIHS Group, Durham University, Durham, UK"}]}],"member":"320","published-online":{"date-parts":[[2024,4,20]]},"reference":[{"key":"e_1_3_9_2_2","article-title":"A taxonomy of uncertainty for dynamically adaptive system","author":"Ramirez A. 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