一种基于QoS的扩展语义Web服务发现方法  

Discovery Method of Extension Semantic Web Service Based on the QoS

作　　者：李小林[1] 张力娜[2] 李卫斌[1] 

机构地区：[1]咸阳师范学院信息工程学院 [2]咸阳师范学院数学与计算科学学院,陕西咸阳712000

出　　处：《重庆师范大学学报（自然科学版）》2010年第6期55-58,共4页Journal of Chongqing Normal University:Natural Science

基　　金：陕西省自然科学基础研究项目(No.2007D22);咸阳师范学院专项科研基金(No.07XSYK214;No.07XSYK107)

摘　　要：如何从大量的Web服务集合中找到满足用户要求的服务是Web服务技术的关键,然而现有Web服务缺乏对QoS信息的描述,不能满足用户对服务QoS的需求。本文基于OWL-S本体扩展了profile描述,将QoS本体引入OWL-S,在基于SOA工作框架以及P2P网络的基础上,设计了Web服务发现框架,并在该框架中引入了QoS管理模块。服务匹配过程分为两个阶段:第一阶段为基于服务功能的匹配,服务的功能主要从inputs、outputs、preconditions和effect描述;第二阶段为基于服务QoS的匹配,QoS属性从time、cost和reliability描述,以满足用户对服务质量提出的要求。实验结果表明该模型可以有效地增加Web服务发现的有效性。How to discover services for ours is the key problem for the application of the Web service technology.However,current descriptions of Web services lack QoS information,can not meet the needs of the user＇s QoS of services.In this paper,after extending the profile description based on OWL-S,the QoS was introduced into OWL-S.Based on the SOA framework and P2P networks,the Web service discovery framework is designed,and the QoS management module was introduced into.The matching process is divided into two phases.The first is based on function.The service function is described from inputs,outputs,preconditions and effect;the second is based on services QoS.QoS attribute is described from the time,cost,and reliability.The experimental result shows this model of Web service discovery greatly increases the recall rate,and improves the performance of Web service discovery.

关 键 词：WEB服务 QOS 本体 OWL-S 服务发现模型 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]