RELAX: incorporating uncertainty into the specification of self-adaptive systems

Jon Whittle, Pete Sawyer, Nelly Bencomo, Betty H.C. Cheng, Jean-Michel Bruel

Research output: Chapter in Book/Published conference outputConference publication


Self-adaptive systems have the capability to autonomously modify their behaviour at run-time in response to changes in their environment. Self-adaptation is particularly necessary for applications that must run continuously, even under adverse conditions and changing requirements; sample domains include automotive systems, telecommunications, and environmental monitoring systems. While a few techniques have been developed to support the monitoring and analysis of requirements for adaptive systems, limited attention has been paid to the actual creation and specification of requirements of self-adaptive systems. As a result, self-adaptivity is often constructed in an ad-hoc manner. In this paper, we argue that a more rigorous treatment of requirements explicitly relating to self-adaptivity is needed and that, in particular, requirements languages for self-adaptive systems should include explicit constructs for specifying and dealing with the uncertainty inherent in self-adaptive systems. We present RELAX, a new requirements language for selfadaptive systems and illustrate it using examples from the smart home domain.
Original languageEnglish
Title of host publicationProceedings of the 2009 17th IEEE International Requirements Engineering Conference
Number of pages10
ISBN (Print)978-0-7695-3761-0
Publication statusPublished - 2009
Event17th IEEE international requirements engineering conference - Atlanta, GA, United States
Duration: 31 Aug 20094 Sept 2009

Publication series

NameIEEE conference publications
ISSN (Print)1090-705X


Conference17th IEEE international requirements engineering conference
Abbreviated titleRE'09
Country/TerritoryUnited States
CityAtlanta, GA

Bibliographical note

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