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Engineering Self-Adaptive Software Systems: From Requirements to Model Predictive Control
School of Computing, Engineering and Mathematics, University of Brighton, United Kingdom.
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0002-1364-8127
Federal University of Espírito Santo, Brazil.
School of Electrical Engineering and Computer Science, University of Ottawa, Canada.
2018 (English)In: ACM Transactions on Autonomous and Adaptive Systems, ISSN 1556-4665, E-ISSN 1556-4703, Vol. 13, no 1, article id 1Article in journal (Refereed) Published
Abstract [en]

Self-adaptive software systems monitor their operation and adapt when their requirements fail due to unexpected phenomena in their environment. This article examines the case where the environment changes dynamically over time and the chosen adaptation has to take into account such changes. In control theory, this type of adaptation is known as Model Predictive Control and comes with a well-developed theory and myriad successful applications. The article focuses on modeling the dynamic relationship between requirements and possible adaptations. It then proposes a controller that exploits this relationship to optimize the satisfaction of requirements relative to a cost function. This is accomplished through a model-based framework for designing self-adaptive software systems that can guarantee a certain level of requirements satisfaction over time by dynamically composing adaptation strategies when necessary. The proposed framework is illustrated and evaluated through two simulated systems, namely, the Meeting-Scheduling exemplar and an E-Shop.

Place, publisher, year, edition, pages
2018. Vol. 13, no 1, article id 1
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:mdh:diva-41841DOI: 10.1145/3105748ISI: 000434636500002Scopus ID: 2-s2.0-85064529237OAI: oai:DiVA.org:mdh-41841DiVA, id: diva2:1274067
Available from: 2018-12-27 Created: 2018-12-27 Last updated: 2019-05-09Bibliographically approved

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Papadopoulos, Alessandro

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