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As the number of Web services grows exponentially, it is necessary to improve the efficiency of services discovery. The WSG-based service discovery method uses semantic relationships among Web services to discover a composite service as a whole. It has been shown from the existing simulated experiments that the method can largely improve Web service discovery efficiency. However, the encapsulation of multiple composite web services and transportation of it from UDDI center to a client as well as visualization of composite web services at client side for selection are still problems that should be solved to achieve a practical WSG-based service discovery. This paper proposes a knowledge-map- based method to solve these problems. It is a supplementary to WSG-based services discovery theory.