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WSSim : a Tool for the Measurement of Web Service Interface Similarity

Measuring web services similarity is a key solution to benefit from reusing the large number of Web service collections available on the Internet. This paper presents a practical approach to measure the similarity of Web services based on their interfaces. The approach relies on the use of several similarity metrics. Both semantic and lexical metrics are integrated throughout a specific technique for assessing scores between matched Web services, operations, messages, parameters identifiers and types. The obtained similarity scores are good indicators of the substitutability relation (and thus of the capacity for reuse) between the compared services. A tool has been developed to implement this approach. This tool has been experimented on some real world Web services.