本文選題：Web服務(wù) + UDDI�。� 參考：《重慶大學(xué)》2014年碩士論文

【摘要】：隨著Web服務(wù)研究的不斷深入和大量穩(wěn)定易用的Web服務(wù)的廣泛應(yīng)用，如何從眾多的服務(wù)中高效地發(fā)現(xiàn)滿足需求的Web服務(wù)是一個(gè)需要解決的問題。傳統(tǒng)的基于UDDI和WSDL標(biāo)準(zhǔn)的Web服務(wù)發(fā)現(xiàn)方法是基于簡(jiǎn)單分類與關(guān)鍵字查詢，具有不能準(zhǔn)確描述查詢的目標(biāo)、缺乏對(duì)候選服務(wù)和查詢目標(biāo)間的符合程度的度量、缺乏對(duì)多種語義操作查詢的支持等缺點(diǎn)，影響了Web服務(wù)的查準(zhǔn)率和查全率，并沒有明確地定義Web服務(wù)QoS(Quality of Service)信息表示方法，僅能找到滿足功能的Web服務(wù)，不能發(fā)現(xiàn)最適合服務(wù)請(qǐng)求者的服務(wù)。 近年來，服務(wù)請(qǐng)求者加大了對(duì)Web服務(wù)非功能特性的關(guān)注。為了能夠讓用戶發(fā)現(xiàn)最適合自己的Web服務(wù)，本文在傳統(tǒng)的框架上加入了對(duì)QoS非功能特性的考慮，，然后利用并發(fā)協(xié)商機(jī)制對(duì)QoS參數(shù)進(jìn)行協(xié)商，最后利用效用函數(shù)從協(xié)商成功的Web服務(wù)中選擇最合適的服務(wù)，提出了一種基于并發(fā)協(xié)商的Web服務(wù)發(fā)現(xiàn)模型。 具體工作如下： ①首先對(duì)面向服務(wù)的計(jì)算機(jī)體系結(jié)構(gòu)、Web服務(wù)的各種特性以及Web服務(wù)發(fā)現(xiàn)的傳統(tǒng)框架進(jìn)行研究，分析了傳統(tǒng)Web服務(wù)發(fā)現(xiàn)框架的一些缺陷與不足，分析了服務(wù)質(zhì)量的重要性以及對(duì)Web服務(wù)發(fā)現(xiàn)的影響。 ②對(duì)Agent技術(shù)與多Agent系統(tǒng)進(jìn)行了研究；并對(duì)自動(dòng)協(xié)商、協(xié)商議題、協(xié)商協(xié)議、一對(duì)多協(xié)商等進(jìn)行了研究；對(duì)比研究了協(xié)商中用到的各種協(xié)調(diào)策略和協(xié)商策略。 ③研究了以往各種Web服務(wù)發(fā)現(xiàn)方法，分析并發(fā)協(xié)商的特性以及基于QoS的Web服務(wù)，設(shè)計(jì)了一種基于并發(fā)協(xié)商的Web服務(wù)發(fā)現(xiàn)模型；并給出了本模型的發(fā)現(xiàn)框架、并發(fā)協(xié)商框架；設(shè)計(jì)了模型算法步驟；最后采用均勻線性策略、易妥協(xié)協(xié)商策略、基于對(duì)手歷史協(xié)商策略與無協(xié)商算法進(jìn)行對(duì)比實(shí)驗(yàn)，得出協(xié)商后的效用值明顯好于無協(xié)商的效用值，并發(fā)協(xié)商Web服務(wù)發(fā)現(xiàn)框架會(huì)得到更優(yōu)的服務(wù)，驗(yàn)證了模型的有效性與正確性。
[Abstract]:With the deepening of the research on Web services and the wide application of a large number of stable and easy-to-use Web services, it is a problem to solve how to efficiently find the Web services that meet the requirements from many services. The traditional Web service discovery method based on UDDI and WSDL standards is based on simple classification and keyword query. The lack of support for multiple semantic operation queries affects the recall and recall of Web services, and does not clearly define the QoS(Quality of Service information representation method for Web services, and can only find Web services that satisfy their functions. Services that are best suited to service requesters cannot be found. In recent years, service requesters have increased their attention to the non-functional features of Web services. In order to enable users to find the most suitable Web services for themselves, this paper adds consideration to the non-functional features of QoS in the traditional framework, and then uses concurrent negotiation mechanism to negotiate QoS parameters. Finally, a Web service discovery model based on concurrent negotiation is proposed by using utility function to select the most suitable service from the negotiated Web service. The specific work is as follows: Firstly, the characteristics of the service-oriented computer architecture and the traditional framework of Web service discovery are studied, and some defects and shortcomings of the traditional Web service discovery framework are analyzed. The importance of QoS and its influence on Web service discovery are analyzed. (2) the Agent technology and multi- system are studied, and the automatic negotiation, negotiation topic, negotiation protocol and one-to-many negotiation are studied, and various coordination strategies and negotiation strategies used in negotiation are compared. 3. This paper studies various Web service discovery methods in the past, analyzes the characteristics of concurrent negotiation and Web services based on QoS, designs a Web service discovery model based on concurrent negotiation, and presents the discovery framework and concurrency negotiation framework of this model. The model algorithm steps are designed. Finally, uniform linear strategy and compromise negotiation strategy are adopted. The results show that the utility value after negotiation is obviously better than that without negotiation, based on the comparison experiment between historical negotiation strategy and non-negotiation algorithm. The concurrency negotiation Web services discovery framework will get better service, which verifies the validity and correctness of the model.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.09

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