A broker-based semantic agent for discovering Semantic Web services through process similarity matching and equivalence considering quality of service

• Published in: Science China. Information sciences 2013, Vol.56 (1), p.14-37
• Main Authors: Celik, Duygu, Elci, Atilla
• Format: Article
• Language: English
• Subjects: Acoustic microscopes; Algorithms; Computer Science; Descriptions; Equivalence; Information Systems and Communication Service; Internet service providers; Knowledge bases (artificial intelligence); Matching; Parameters; Quality of service; Research Paper; Semantic web; Semantics; Similarity; Tasks; Web services; 代理系统; 券商; 发现过程; 服务质量参数; 相似性匹配; 知识基础; 等价; 语义Web服务
• ISSN: 1674-733X; 1869-1919
• DOI: 10.1007/s11432-012-4697-1

The lack of semantic descriptions for ＂web service properties＂ makes it difficult to find suitable web services. Current solutions are mostly based on broker/mediator agent systems. However, these techniques are syntactical, rather than semantics oriented. This article presents a semantic matching approach for discovering Semantic Web services through a broker-based semantic agent （BSA）. The BSA includes knowledge-bases and several processing steps. The BSA＇s knowledge-bases are concept, task, and process ontologies built to describe both functional and non-functional parameters of services. The BSA executes semantic-based matching algo- rithms to discover similar services through the semantic matching step, process equivalence task, and matching of quality of service parameters. Relevant services are ranked by client preferences utilizing the semantic descrip- tions of available services. Other matchmaker studies are reviewed and compared with the BSA. Performance of the BSA algorithm is compared with SAM using published data and an experimental setup. The results indicate that our approach is better and more effective in some respects.