| Summary: | Studying the similarity between Web services operations is a key solution to many problems, especially those related to the substitution, such as during a call failure or a malfunction, a list of similar operations is returned to the customer. He chooses an operation based on non-functional criteria. Generally, the similarity between Web services operations depends on the similarity between their inputs and their outputs parameters. In this work, we propose a new technique to study the functional similarity between web services operations. We will also, form a network such as the nodes represent the operations of the web services. A link joins two similar operations according to some relationships defined between them. The constituted network responds to the substitution best and much easier than existing works.
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