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

作　　者：ELK Duygu EL Atilla 

机构地区：[1]Computer Engineering Department,Istanbul Aydin University [2]Electrical-Elecronics Engineering Department,Aksaray University

出　　处：《Science China(Information Sciences)》2013年第1期14-37,共24页中国科学（信息科学）（英文版）

基　　金：supported in full by Eastern Mediterranean University (EMU) Scientific Research Project (Grant No. BAP-A-07-20),Turkey

摘　　要：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.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.

关 键 词：Semantic Web Semantic Web services broker web applications ontologies semantic agents 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术] TP393.09[自动化与计算机技术—计算机科学与技术]