SEAMS 2020
Mon 29 June - Fri 3 July 2020
co-located with ICSE 2020
Tue 30 Jun 2020 14:10 - 14:15 at SEAMS - Session 3: Composition, Control and Trustworthiness Chair(s): Danny Weyns

Self-adaptive systems continuously adapt to internal and external changes in their execution environment. In context-based self-adaptation, adaptations take place in response to the characteristics of the execution environment, captured as a context. However, in large-scale adaptive systems operating in dynamic environments, multiple contexts are often active at the same time, requiring simultaneous execution of multiple adaptations. Complex interactions between such adaptations might not have been foreseen or accounted for at design time. For example, adaptations can partially overlap, requiring only partial execution of each, or they can be conflicting, requiring some of the adaptations not to be executed at all, in order to preserve system execution. To ensure a correct composition of adaptations, we propose ComInA, a novel reinforcement learning based approach, which autonomously learns interactions between adaptations as well as the most appropriate adaptation composition for each combination of active contexts, as they arise. We present an initial evaluation of ComInA in an urban public transport network simulation, where multiple adaptations to buses, routes, and stations are required. Early results show that ComInA correctly identifies whether adaptations are compatible or conflicting and learns to execute adaptations which maximize system performance. However, further investigation is needed into how best to utilize such identified relationships to optimize a wider range of metrics and utilize more complex composition strategies.

Tue 30 Jun
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seams-2020-papers
14:00 - 15:30: SEAMS 2020 - Session 3: Composition, Control and Trustworthiness at SEAMS
Chair(s): Danny WeynsKU Leuven
seams-2020-papers14:00 - 14:05
Talk
Abdessalam ElhabbashLancaster University, Vatsala NundlollLancaster University, Yehia ElkhatibLancaster University, Gordon BlairLancaster University, Vicent Sanz MarcoLancaster University
DOI Pre-print Media Attached
seams-2020-papers14:05 - 14:10
Talk
José D'Abruzzo PereiraUniversity of Coimbra, Rui SilvaUniversity of Coimbra, Nuno AntunesUniversidade de Coimbra, Jorge Luiz Machado da SilvaUnicamp, Breno de FrançaUNICAMP, Regina MoraesUNICAMP, Marco VieiraUniversity of Coimbra
DOI Pre-print Media Attached
seams-2020-papers14:10 - 14:15
Talk
Nicolás CardozoUniversidad de los Andes, Ivana DusparicTrinity College Dublin, Ireland
DOI Pre-print Media Attached
seams-2020-papers14:15 - 14:20
Talk
Ilja ShmelkinTechnische Universität Dresden, Germany
DOI Pre-print Media Attached
seams-2020-papers14:20 - 14:25
Talk
Tim KlugeTU Dresden, Germany
DOI Pre-print Media Attached
seams-2020-papers14:25 - 15:30
Other