【摘要】：隨著計(jì)算機(jī)技術(shù)和網(wǎng)絡(luò)技術(shù)的飛速發(fā)展,網(wǎng)絡(luò)上發(fā)布的Web服務(wù)越來越多。但是,由于現(xiàn)在的互聯(lián)網(wǎng)環(huán)境是開放的、自治的、不確定的,可能導(dǎo)致Web服務(wù)資源是不可靠的、錯(cuò)誤的,甚至是惡意的,因而會(huì)影響Web服務(wù)的質(zhì)量,甚至可能給用戶帶來安全上的隱患。而對(duì)于由Web服務(wù)組合而成的組合Web服務(wù),同樣因?yàn)檫\(yùn)行環(huán)境的開放性和不確定性以及Web服務(wù)的不可信或者上下文改變等原因,可能導(dǎo)致不能滿足用戶的需求。因此,在這樣的網(wǎng)絡(luò)環(huán)境下,對(duì)Web服務(wù)組合進(jìn)行可信評(píng)估具有重要的現(xiàn)實(shí)意義。本文針對(duì)Web服務(wù)及其組合可信評(píng)估的研究現(xiàn)狀,在研究和學(xué)習(xí)Web服務(wù)及其組合相關(guān)理論的基礎(chǔ)上,給出了一個(gè)需求驅(qū)動(dòng)的Web服務(wù)組合可信評(píng)估框架,設(shè)計(jì)了基于I*框架的需求描述模型。給出了影響Web服務(wù)可信的質(zhì)量屬性及其度量方法,同時(shí)給出了 Web服務(wù)組合的質(zhì)量屬性及其度量方法。重點(diǎn)研究了 Web服務(wù)可信評(píng)估算法以及需求驅(qū)動(dòng)的Web服務(wù)組合的可信評(píng)估算法。實(shí)現(xiàn)了需求驅(qū)動(dòng)的Web服務(wù)組合可信評(píng)估框架的主要功能模塊,包括需求解析器、具體Web服務(wù)組合生成模塊、Web服務(wù)可信評(píng)估模塊以及需求驅(qū)動(dòng)的Web服務(wù)組合可信評(píng)估模塊。最后,基于該框架給出了一個(gè)外出旅游的Web服務(wù)組合實(shí)例,通過實(shí)例模擬整個(gè)執(zhí)行流程,驗(yàn)證了需求驅(qū)動(dòng)的Web服務(wù)組合可信評(píng)估框架的可行性與有效性。
[Abstract]:With the rapid development of computer technology and network technology, more and more Web services are published on the network. However, because the current Internet environment is open, autonomous, uncertain, may lead to Web services resources are unreliable, wrong, or even malicious, which will affect the quality of Web services. It may even bring security risks to users. The composition of Web services composed of Web services may not meet the needs of users because of the openness and uncertainty of the running environment and the untrustworthy or contextual changes of Web services. Therefore, in such a network environment, it is of great practical significance to evaluate the Web service composition trusted. In this paper, according to the current research situation of Web services and its composition trusted evaluation, based on the research and study of the theory of Web services and its composition, a demand-driven framework of Web service composition trusted evaluation is proposed. A requirement description model based on I * framework is designed. In this paper, the quality attributes and their measurement methods that affect Web service trustworthiness are given, and the quality attributes and their measurement methods of Web service composition are also given. The trust evaluation algorithm of Web services and the trusted evaluation algorithm of Web service composition driven by requirement are studied in detail. The main function modules of the Web service composition trusted evaluation framework are implemented, including the requirement parser, the concrete Web service composition generation module, the Web service trusted evaluation module and the requirement driven Web service composition trusted evaluation module. Finally, an example of Web service composition based on the framework is given, and the feasibility and effectiveness of the Web service composition trusted evaluation framework driven by requirement are verified by simulating the whole execution process.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP393.09

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本文編號(hào)：2389619