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使用倒排索引优化面向组合的语义服务发现
引用本文:邝砾,邓水光,李莹,吴健,吴朝晖.使用倒排索引优化面向组合的语义服务发现[J].软件学报,2007,18(8):1911-1921.
作者姓名:邝砾  邓水光  李莹  吴健  吴朝晖
作者单位:浙江大学,计算机科学与技术系,浙江,杭州,310027
基金项目:国家自然科学基金;国家高技术研究发展计划(863计划);国家科技支撑计划;浙江省自然科学基金
摘    要:提出为服务库中所有注册服务的输出建立倒排索引,以快速、准确、高效地发现目标服务.即为每个输出维护一个服务列表,用于记录在该服务库中所有能够产生该输出的服务.基于倒排索引机制,提出面向组合的服务发现算法.该方法利用倒排索引的优势,极大地减少了搜索空间,并通过挖掘服务组合提高服务发现的查全率.仿真实验表明,该方法能够在大规模服务库中快速、全面地响应用户请求.

关 键 词:Web服务  服务发现  服务组合  倒排索引  语义相似度
收稿时间:3/1/2007 12:00:00 AM
修稿时间:2007-04-26

Using Inverted Indexing to Facilitate Composition-Oriented Semantic Service Discovery
KUANG Li,DENG Shui-Guang,LI Ying,WU Jian and WU Zhao-Hui.Using Inverted Indexing to Facilitate Composition-Oriented Semantic Service Discovery[J].Journal of Software,2007,18(8):1911-1921.
Authors:KUANG Li  DENG Shui-Guang  LI Ying  WU Jian and WU Zhao-Hui
Affiliation:Department of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China
Abstract:It is proposed to establish inverted indexing for ontology-annotated outputs when services are registered in order to find the target services in a quick, accurate and efficient way. For each ontology-annotated output, there is a service list which records all the services in the registry that deliver the output. Based on the indexing, a composition-oriented service discovery algorithm is proposed, which greatly accelerates the filtering of irrelevant atomic services by making use of the inverted indexing, and increases the likelihood of finding a possible candidate by exploring service composition. The results of the extensive experiments show that the proposed algorithm provides better performance on response time than the sequential matchmaking, and better recall rate than the algorithms without the exploration of composition.
Keywords:Web service  service discovery  service composition  inverted indexing  semantic similarity
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