Self-adaptive volunteered services composition through stimulus-and time-awareness

Abdessalam Elhabbash, Rami Bahsoon, Peter Tiño, Peter R. Lewis

Research output: Chapter in Book/Published conference outputConference publication


Volunteered Service Composition (VSC) refers to the process of composing volunteered services and resources. These services are typically published to a pool of voluntary resources. Selection and composition decisions tend to encounter numerous uncertainties: service consumers and applications have little control of these services and tend to be uncertain about their level of support for the desired functionalities and non-functionalities. In this paper, we contribute to a self-awareness framework that implements two levels of awareness, Stimulus-awareness and Time-awareness. The former responds to basic changes in the environment while the latter takes into consideration the historical performance of the services. We have used volunteer service computing as an example to demonstrate the benefits that self-awareness can introduce to self-adaptation. We have compared the Stimulus-and Time-awareness approaches with a recent Ranking approach from the literature. The results show that the Time-awareness level has the advantage of satisfying higher number of requests with lower time cost.

Original languageEnglish
Title of host publicationProceedings : 2015 IEEE International Conference on Web Services, ICWS 2015
EditorsJohn A. Miller, Hong Zhu
Place of PublicationPiscataway, NJ (US)
Number of pages8
ISBN (Electronic)978-1-4673-8090-4, 978-1-4673-7272-5
ISBN (Print)978-1-4673-7271-8
Publication statusPublished - 13 Aug 2015
EventIEEE International Conference on Web Services - New York, United States
Duration: 27 Jun 20152 Jul 2015


ConferenceIEEE International Conference on Web Services
Abbreviated titleICWS 2015
Country/TerritoryUnited States
CityNew York

Bibliographical note

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  • service dependability
  • stimulus-awareness
  • time-awareness
  • volunteered service


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