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CATS-CAE Reflective Middleware Framework for Adapting Context-Aware Transactional Services: Using a Hybrid Policy-Based Approach
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Author(s): Widad Ettazi (IMS Team, ADMIR Laboratory, ENSIAS, Rabat IT Center, Mohammed V University, Rabat, Morocco), Mahmoud Nassar (IMS Team, ADMIR Laboratory, ENSIAS, Rabat IT Center, Mohammed V University, Rabat, Morocco)and Hatim Hafiddi (SEEDS Team, STRS Laboratory, INPT, Rabat, Morocco)
Copyright: 2020
Volume: 17
Issue: 2
Pages: 19
Source title:
International Journal of Web Services Research (IJWSR)
Editor(s)-in-Chief: Liang-Jie Zhang (Kingdee International Software Group, China)and Chia-Wen Tsai (Ming Chuan University, Taiwan)
DOI: 10.4018/IJWSR.2020040103
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Abstract
Pervasive environments are characterized by limited computing resources and wireless connectivity. In parallel, current application domains have variable transactional requirements that do not fit the traditional ACID model. As a result, the pervasive environment characteristics are compelling and cannot be supported by conventional solutions that are typically dedicated to a specific application domain and support a limited set of context parameters. This article aims at providing a complete solution that addresses the challenges of the adaptability of context-aware transactional services “CATS” in pervasive environments. Thus, a new framework CATS-CAE was designed, which offers a comprehensive structure of multiple component chains. The adaptation strategy in CATS-CAE is based on a hybrid approach combining the use of adaptation policies, alternative strategy and behavioral adaptation of composite services through the “Profiled Task Class” concept. A probabilistic model is also presented to support the efficiency of the proposed approach.
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