A fuzzy service adaptation engine for context‐aware mobile computing middleware

A fuzzy service adaptation engine for context‐aware mobile computing middleware Purpose – Context‐aware mobile computing extends the horizons of the conventional computing model to a ubiquitous computing environment that serves users at anytime, anywhere. To achieve this, mobile applications need to adapt their behaviors to the changing context. The purpose of this paper is to present a generalized adaptive middleware infrastructure for context‐aware computing. Design/methodology/approach – Owing to the vague nature of context and uncertainty in context aggregation for making adaptation decisions, the paper proposes a fuzzy‐based service adaptation model (FSAM) to improve the generality and effectiveness of service adaptation using fuzzy theory. Findings – By the means of fuzzification of the context and measuring the fitness degree between the current context and the predefined optimal context, FSAM selects the most suitable policy to adopt for the most appropriate service. The paper evaluates the middleware together with the FSAM inference engine by using a Campus Assistant application. Originality/value – The paper is of value in presenting a generalized adaptive middleware infrastructure for context‐aware computing and also comparing the performance of the fuzzy‐based solution with a conventional threshold‐based approach for context‐aware adaptation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Pervasive Computing and Communications Emerald Publishing

A fuzzy service adaptation engine for context‐aware mobile computing middleware

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Publisher
Emerald Publishing
Copyright
Copyright © 2008 Emerald Group Publishing Limited. All rights reserved.
ISSN
1742-7371
DOI
10.1108/17427370810890256
Publisher site
See Article on Publisher Site

Abstract

Purpose – Context‐aware mobile computing extends the horizons of the conventional computing model to a ubiquitous computing environment that serves users at anytime, anywhere. To achieve this, mobile applications need to adapt their behaviors to the changing context. The purpose of this paper is to present a generalized adaptive middleware infrastructure for context‐aware computing. Design/methodology/approach – Owing to the vague nature of context and uncertainty in context aggregation for making adaptation decisions, the paper proposes a fuzzy‐based service adaptation model (FSAM) to improve the generality and effectiveness of service adaptation using fuzzy theory. Findings – By the means of fuzzification of the context and measuring the fitness degree between the current context and the predefined optimal context, FSAM selects the most suitable policy to adopt for the most appropriate service. The paper evaluates the middleware together with the FSAM inference engine by using a Campus Assistant application. Originality/value – The paper is of value in presenting a generalized adaptive middleware infrastructure for context‐aware computing and also comparing the performance of the fuzzy‐based solution with a conventional threshold‐based approach for context‐aware adaptation.

Journal

International Journal of Pervasive Computing and CommunicationsEmerald Publishing

Published: Jun 27, 2008

Keywords: Mobile communication systems; Fuzzy control; Fuzzy logic; Network operating systems; Computer software; Portable computers

References

  • Mobile computing middleware for context‐aware applications
    Capra, L.
  • An adaptive middleware infrastructure for mobile computing
    Cheung, R.
  • Dynamic service reconfiguration for wireless web access
    Chuang, S.N.; Chan, A.T.S.; Cao, J.; Cheung, R.

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