【摘要】：隨著Web服務(wù)的大量涌現(xiàn)，自動的Web服務(wù)組合成為使Web增值的研究熱點(diǎn)。同時(shí)隨著語義技術(shù)的不斷發(fā)展，基于語義的Web服務(wù)組合成為主流研究方向。其中，基于服務(wù)網(wǎng)絡(luò)的Web服務(wù)組合取得了顯著成果，但是，基于服務(wù)網(wǎng)絡(luò)的Web服務(wù)組合還存在著效率和準(zhǔn)確率低的問題。 本文首先分析服務(wù)網(wǎng)絡(luò)語義模型的三層結(jié)構(gòu)：參數(shù)級語義關(guān)系、接口級語義關(guān)系、服務(wù)級語義關(guān)系。然后舉例分析了基于服務(wù)網(wǎng)絡(luò)的組合算法的準(zhǔn)確率，發(fā)現(xiàn)Web服務(wù)參數(shù)語義關(guān)系缺乏上下文信息，導(dǎo)致基于服務(wù)網(wǎng)絡(luò)的Web服務(wù)組合算法的準(zhǔn)確率低。針對該問題，本文對Web服務(wù)參數(shù)進(jìn)行擴(kuò)展，，添加了4種參數(shù)約束，并定義了參數(shù)約束之間的匹配關(guān)系。在擴(kuò)展服務(wù)網(wǎng)絡(luò)的同時(shí)，本文還分析了組合需求模型的不足，并根據(jù)已擴(kuò)展的服務(wù)網(wǎng)絡(luò)，對組合需求模型進(jìn)行了擴(kuò)展，為原有的需求輸入輸出參數(shù)添加了上下文約束信息，約束種類對應(yīng)于擴(kuò)展后的服務(wù)網(wǎng)絡(luò)。最后本文實(shí)現(xiàn)了基于擴(kuò)展后的服務(wù)參數(shù)約束信息，利用擴(kuò)展后的組合需求約束對服務(wù)網(wǎng)絡(luò)語義邊進(jìn)行過濾的Web服務(wù)自動組合算法。實(shí)驗(yàn)表明，本文提出的基于約束的Web服務(wù)組合算法能夠有效提高服務(wù)組合的效率和準(zhǔn)確率。本文還使用HTML5、JS技術(shù)實(shí)現(xiàn)了組合結(jié)果的圖形化展示。 綜上所述，本文對服務(wù)網(wǎng)絡(luò)、組合需求模型進(jìn)行擴(kuò)展，利用擴(kuò)展后的約束信息，設(shè)計(jì)了一種基于約束的Web服務(wù)自動組合，提高了原有基于Web服務(wù)語義關(guān)系圖的算法的效率和準(zhǔn)確率。
[Abstract]:With the emergence of Web services, automatic Web service composition has become the research focus of Web value-added. At the same time, with the development of semantic technology, semantic-based Web service composition becomes the mainstream research direction. Among them, the Web service composition based on the service network has achieved remarkable results, but the Web service composition based on the service network still has the problem of low efficiency and accuracy. In this paper, we first analyze the three-layer structure of the semantic model of service network: parametric semantic relationship, interface semantic relationship and service-level semantic relationship. Then, an example is given to analyze the accuracy of the composition algorithm based on service network. It is found that the semantic relationship of Web service parameters lacks context information, which leads to the low accuracy of Web service composition algorithm based on service network. To solve this problem, this paper extends the parameters of Web service, adds four kinds of parameter constraints, and defines the matching relationship between them. At the same time of extending the service network, this paper also analyzes the shortcomings of the composition requirement model, and according to the extended service network, extends the composition requirement model, and adds the context constraint information for the original requirement input and output parameters. The types of constraints correspond to the extended service network. Finally, an automatic Web service composition algorithm is implemented based on the extended service parameter constraint information and the extended composition requirement constraint to filter the semantic edge of the service network. Experiments show that the constrained Web service composition algorithm can effectively improve the efficiency and accuracy of service composition. This paper also uses HTML5,JS technology to realize the graphical display of the combined results. To sum up, this paper extends the model of service network and composition requirements, and designs an automatic composition of Web services based on constraints by using the extended constraint information. The efficiency and accuracy of the original algorithm based on Web service semantic diagram are improved.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.09

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 廖軍,譚浩;新一代開放分布式處理技術(shù)——Web Services[J];計(jì)算機(jī)應(yīng)用;2004年08期

2 陳博,許滿武;基于Web的計(jì)算模型——Web Service[J];計(jì)算機(jī)應(yīng)用研究;2003年01期

3 岳昆,王曉玲,周傲英;Web服務(wù)核心支撐技術(shù):研究綜述[J];軟件學(xué)報(bào);2004年03期

相關(guān)博士學(xué)位論文 前1條

1 胡佳;語義Web服務(wù)自動組合及驗(yàn)證的研究[D];天津大學(xué);2010年

本文編號：2402441