关键词: Web服务, 搜索引擎, 信息检索, 服务匹配

Abstract: The rapid development and wide employment of Web services inspires many researches on how to efficiently and effectively find the desired Web services for the users, which has become a challenging problem in Web services applications. Current Web services searching techniques mainly include UDDI registries, Web services portals, vertical search engines and general-purpose search engines. This paper surveys the state of the art of Web services searching, and based on a comprehensive analysis of existing techniques, points out that it is necessary and urgent to build new vertical search engines for effective and efficient Web services searching. Furthermore, major challenging issues to reach the goal are highlighted.

Key words: Web services, search engine, information retrieval, Web services matching