NDLI: Enabling Runtime Evolution of Context-Aware Adaptive Services

Content Provider	IEEE Xplore Digital Library
Author	Hussein, M. Jun Han Jian Yu Colman, A.
Copyright Year	2013
Description	Author affiliation: Fac. of Inf. & Commun. Technol., Swinburne Univ. of Technol., Melbourne, VIC, Australia (Hussein, M.; Jun Han; Jian Yu; Colman, A.)
Abstract	There is an increasing demand for context-aware adaptive services that can evolve at runtime in response to unanticipated changes in their environments or functionalities. Enabling the runtime evolution of such context-aware adaptive services is still a major challenge. In this paper, we introduce a novel approach to tackle this challenge. At the development time, our approach explicitly models a context-aware adaptive service from three aspects: functionality, context, and adaptive behaviour. As such, these aspects and their relationships can be clearly captured and easily manipulated. The approach also generates the executable artifacts of the composite service from their models. These artifacts are engineered with the ability to be changed at runtime (i.e. evolvable artifacts). To cope with unanticipated changes, we adopt the models@runtime concept for keeping the service model alive at runtime. This model is then manipulated by the software engineer to take into account such changes. To apply the model changes to the running service's composition, differences between the running service model and its evolved model are computed. Then, adaptation actions corresponding to the differences are generated and applied to the service's evolvable artifacts. To demonstrate the approach applicability, we have used it to develop and evolve two case studies: travel guide and electronic exam services.
Starting Page	248
Ending Page	255
File Size	639801
Page Count	8
File Format	PDF
e-ISBN	9780769550268
DOI	10.1109/SCC.2013.77
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Context Adaptation models Runtime Contracts Context modeling Computational modeling Roads Self-adaptation Runtime Evolution Models@runtime Context-awareness
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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