Lancaster EPrints

RELAX: A Language to Address Uncertainty in Self-Adaptive Systems Requirements

Whittle, Jon and Sawyer, Peter and Bencomo, Nelly and Cheng, B. H. C. (2010) RELAX: A Language to Address Uncertainty in Self-Adaptive Systems Requirements. Requirements Engineering, 15 (2). pp. 177-196. ISSN 0947-3602

Full text not available from this repository.

Abstract

Self-adaptive systems have the capability to autonomously modify their behavior 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 specication of requirements of self-adaptive systems. As a result, self-adaptivity is often constructed in an ad-hoc manner. In order to support the rigorous specication of adaptive systems requirements, this paper introduces RELAX, a new requirements language for self- adaptive systems that explicitly addresses uncertainty inherent in adaptive systems. We present the formal semantics for RELAX in terms of fuzzy logic, thus enabling a rigorous treatment of requirements that include uncertainty. RELAX enables developers to identify uncertainty in the requirements, thereby facilitating the design of systems that are, by denition, more exible and amenable to adaptation in a systematic fashion. We illustrate the use of RELAX on smart home applications, including an adaptive assisted living system.

Item Type: Article
Journal or Publication Title: Requirements Engineering
Subjects: Q Science > QA Mathematics > QA76 Computer software
Departments: Faculty of Science and Technology > School of Computing & Communications
ID Code: 42515
Deposited By: ep_importer_comp
Deposited On: 13 Aug 2010 11:22
Refereed?: Yes
Published?: Published
Last Modified: 02 Oct 2013 00:02
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/42515

Actions (login required)

View Item