In this paper, we propose an approach based on Formal Concept Analysis in order to organize the services registry at runtime and to allow the "best" service selection among heterogeneous and secured services according to a set of specifications. This solution has been validated in the European SODA project on pervasive applications.

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Industry Track 4 - Services Selection and CompositionInternational audienceLate-binding and substitutability offered by the service-oriented approach improve adaptability but increase the need for fast and efficient algorithms to select services. In this paper, we proposed to use the Formal Concept Analysis (FCA) approach as a classification tool to select services at runtime, according to user specifications. We propose to classify existing services and generate a decision tree to help user select the most appropriate service(s). One of advantages of using FCA is the ability to select without additional cost an equivalent service in the case of a service must be replaced at runtime. Our approach have been implemented and validated on pervasive use cases within a European collaborative project

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