(山東建筑大學計算機科學與技術學院, 山東 濟南 250101)
摘要：隨著Web服務的流行和增多，單獨的web服務未必能實現用戶需要的功能，用戶需要的某種功能可能需要組合利用多種web服務來滿足現實要求。本文根據復合服務的不同基本類型，提出了對復合服務的服務質量的計算方法�；谟脩舴答伜头⻊找枚鹊姆椒ɡ昧诵畔z索中的用戶反饋和計算文檔引用度的方法，利用用戶體驗和隱性知識來發現潛在的優秀服務，本文提出了其數學模型和服務相似度計算方法。
關鍵字:Web 服務;服務組合;信息檢索;用戶反饋
中圖分類號：TP391 文獻標識碼：A 文章編號:
Research on Web Service composition based on QoS
Li Yuejun, Wang Xianghui, Cui Wei
(School of Computer Science and technology,Shandong Jianzhu University, Jinan, 250101)
Abstract: As the popularization and increasing of Web Services, single web service may not satisfy the need of different users. In order to accomplish complicated tasks, users may need several different functional web services to be composed as one web service. This paper gives the computational method of the QoS of composed services based on the different types of services. The method of user evaluation and service reference degree techniques are imported inspired by the concepts in Information retrieval. The user experience and implicit knowledge of web service are considered, and the computational model is proposed.
Keywords: Web Service; Service composition; information retrieval;User evaluation
參考文獻：
[1] Daniel A.,Menascé M, Composing Web Services: A QoS View[J], IEEE INTERNET COMPUTING, Nov.2004
[2] L. Aversano, G. Canfora, and A. Ciampi. An algorithm for web service
discovery through their composition[C]. IEEE International Conference on Web Services (ICWS’04), pages 332–341. IEEE Computer Society, 2004
[3] G. Jeh, J. Widom. Simrank: A measure of structural context similarity[C]. Proceedings of the 8th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 2002
[4] S. Melnik, H. Garcia-Molina, and E. Rahm. Similarity Flooding: A
Versatile Graph Matching Algorithm[C]. In Proc. of ICDE, 2002
[5] 蔣哲遠,韓江洪,王釗. 動態的QOS感知Web服務選擇和組合優化模型[J].計算機學報，2009.5,32(5):1014-1025
作者簡介：
李躍軍(1980-)，男，講師，碩士，主要研究Web 服務、信息檢索、推薦系統
