基于领域本体的多层次服务综合匹配

Multi-level complex approach for Web services matchmaking based on domain ontologies

为提高Web服务匹配的灵活性、查全率和查准率,提出了一种基于领域本体的综合服务匹配方法。首先,该方法以领域本体为描述语言提出了Web服务和服务请求的描述形式;然后以此为基础提出了“三层次”服务匹配模型来提高服务匹配的灵活性;同时指出了每层次的相似函数,这些函数综合考虑了影响服务匹配查全率和查准率的各种因素,并在算法中加以体现;最后用实验证明提出的匹配方法是可行和有效的。

In order to improve the level of flexibility,recall and precision of Web services matchmaking,a domain ontologiesbased complex approach for services matching is proposed.Firstly,expressions of Web service and service request using domain ontologies as description language are outlined.Then a three-level matching model is proposed to discover Web services,which caters to high flexibility.Meanwhile relative similarity functions are introduced to rank Web services in services matching,which comprehensively present factors impacting the level of recall and precision.Finally,the matchmaking approach is proved to be feasible and effective by some comparative experiments.