| 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 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60603025, 60503018 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant No.2006AA01Z171 (国家高技术研究发展计划(863)); the National Key Technology R&D Program of China under Grant No.2006BAH02A01 (国家科技支撑计划); the Natural Science Foundation of Zhejiang Province of China under Grant No.Y105463 (浙江省自然科学基金) |
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| Using Inverted Indexing to Facilitate Composition-Oriented Semantic Service Discovery |
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KUANG Li,DENG Shui-Guang,LI Ying,WU Jian,WU Zhao-Hui
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| 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. |
| Key words: Web service service discovery service composition inverted indexing semantic similarity |
