本文選題：Petri網(wǎng)　切入點：服務(wù)組合　出處：《濟南大學(xué)》2016年碩士論文

【摘要】：隨著互聯(lián)網(wǎng)技術(shù)和電子商務(wù)的迅猛發(fā)展,Web服務(wù)作為信息服務(wù)資源的具體實現(xiàn)之一得到了更為廣泛的使用。Web服務(wù)因其跨平臺、松耦合的特點,支持在不同語言,不同平臺上進行有效的Web服務(wù)組合,以分布式計算的模式為人們提供更為方便和豐富的服務(wù)。如何將已有的Web服務(wù)進行有效組合一直是服務(wù)計算領(lǐng)域的熱點問題,其中包括服務(wù)選擇,服務(wù)組合建模,服務(wù)組合動態(tài)執(zhí)行分析等問題。Petri網(wǎng)因其具有嚴格的數(shù)學(xué)定義和適合描述并發(fā)系統(tǒng)的特點,近年來在Web服務(wù)組合相關(guān)的問題研究中得到廣泛應(yīng)用,尤其在服務(wù)組合模型的構(gòu)建,服務(wù)組合中服務(wù)的行為分析等方面。本文面向Web服務(wù)組合,基于服務(wù)組合的Petri網(wǎng)描述,從對具體服務(wù)組合執(zhí)行過程日志的分析,研究對已有服務(wù)組合模型進行優(yōu)化的方法;同時基于運行日志分析,研究實際運行中服務(wù)間存在的關(guān)聯(lián)關(guān)系,為服務(wù)選擇提供有效的選擇依據(jù),提高服務(wù)組合的效率。本文首先從日志文件的獲取和分析方法入手,設(shè)計并實現(xiàn)了基于Petri網(wǎng)的服務(wù)組合執(zhí)行引擎原型系統(tǒng)平臺,在此平臺之上可以實現(xiàn)Web服務(wù)的注冊,Web服務(wù)的組合,服務(wù)組合模型(mx Graph)與相應(yīng)Petri網(wǎng)模型間的轉(zhuǎn)換,服務(wù)組合的執(zhí)行。該平臺基于服務(wù)領(lǐng)域功能體系的OWL(Ontology Working Group)文檔,解析Web服務(wù)的WSDL(Web Services Description Language)文件,將Web服務(wù)注冊到本地,根據(jù)平臺中展示的領(lǐng)域服務(wù)進行服務(wù)的組合,并將其中各類服務(wù)綁定對應(yīng)的具體服務(wù),將服務(wù)組合實例提交執(zhí)行引擎執(zhí)行,最后返回執(zhí)行結(jié)果,同時得到相應(yīng)服務(wù)組合執(zhí)行的運行日志。其次,以服務(wù)組合執(zhí)行日志為基礎(chǔ),挖掘運行日志所反映出具有強關(guān)聯(lián)的抽象服務(wù)和強關(guān)聯(lián)的具體服務(wù),并且設(shè)計相應(yīng)的關(guān)聯(lián)服務(wù)庫,把這些關(guān)聯(lián)的服務(wù)存儲到關(guān)聯(lián)服務(wù)庫中,按照關(guān)聯(lián)強度大小,把抽象的關(guān)聯(lián)服務(wù)推薦給用戶,作為指導(dǎo)用戶的選擇,在進行抽象服務(wù)實例化時也是按照關(guān)聯(lián)強度從大到小的原則進行具體服務(wù)的選擇,并通過具體實驗來驗證由日志中獲取的服務(wù)間關(guān)聯(lián)的有效性及可靠性,優(yōu)化了服務(wù)選擇。最后,從服務(wù)組合模型的角度對服務(wù)組合進行優(yōu)化。服務(wù)組合完成之后,基于運行日志,通過對Web服務(wù)組合中各服務(wù)執(zhí)行時間的評價,對服務(wù)組合的Petri網(wǎng)模型進行優(yōu)化,以實現(xiàn)對服務(wù)組合模型優(yōu)化,提高服務(wù)組合的執(zhí)行效率,有效降低服務(wù)器端系統(tǒng)資源消耗。
[Abstract]:With the rapid development of Internet technology and electronic commerce, Web services, as one of the concrete realization of information service resources, have been more widely used. Web services are supported in different languages because of their cross-platform and loosely coupled characteristics.Effective Web service composition based on different platforms provides people with more convenient and abundant services with distributed computing mode.How to effectively compose existing Web services has always been a hot issue in the field of service computing, including service selection, service composition modeling.Service composition dynamic execution Analysis. Because of its strict mathematical definition and suitable for describing concurrent system, Petri net has been widely used in the research of Web service composition related problems in recent years, especially in the construction of service composition model.Analysis of service behavior in service composition.This paper aims at Web service composition, based on Petri net description of service composition, from the analysis of the execution process log of specific service composition, studies the method of optimizing the existing service composition model, at the same time, based on the analysis of running log,In order to provide an effective basis for service selection and improve the efficiency of service composition, this paper studies the relationship between services in actual operation.This paper starts with the method of obtaining and analyzing log files, designs and implements the prototype system platform of service composition execution engine based on Petri net, and can realize the composition of Web service registration based on this platform.The transformation between the service composition model and the corresponding Petri net model, and the execution of the service composition.The platform is based on the OWL(Ontology Working Group document of the service domain function system, parses the WSDL(Web Services Description language file of the Web service, registers the Web service locally, and performs the composition of the service according to the domain service shown in the platform.The service composition instance is submitted to the execution engine for execution, and the execution result is returned. At the same time, the running log of the corresponding service composition execution is obtained.Secondly, based on the service composition execution log, mining the abstract service with strong association and the concrete service with strong association reflected in the running log, and designing the corresponding associated service library to store these associated services in the association service library.According to the intensity of association, the abstract association service is recommended to the user as the choice of guiding user, and the specific service is chosen according to the principle of association strength from large to small when instantiating the abstract service.The validity and reliability of the correlation between the services obtained from the log are verified by experiments, and the service selection is optimized.Finally, the service composition is optimized from the point of view of service composition model.After the service composition is completed, based on the running log, the service composition Petri net model is optimized by evaluating the execution time of each service in the Web service composition, in order to optimize the service composition model and improve the execution efficiency of the service composition.Reduce server system resource consumption effectively.
【學(xué)位授予單位】：濟南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP393.09;TP301.1

【參考文獻】

相關(guān)期刊論文 前10條

1 蔣黎明;司亞彪;;基于BPEL的Web服務(wù)組合應(yīng)用研究[J];電子制作;2014年17期

2 李連喜;;基于語義網(wǎng)的知識服務(wù)系統(tǒng)研究[J];邊疆經(jīng)濟與文化;2014年01期

3 劉士喜;胡曉靜;;BPEL到PNML文件轉(zhuǎn)換框架的設(shè)計與實現(xiàn)[J];計算機應(yīng)用與軟件;2013年05期

4 馬小潔;王曉軍;;基于改進遺傳算法的QoS感知Web服務(wù)組合[J];計算機技術(shù)與發(fā)展;2012年08期

5 夏亞梅;程渤;陳俊亮;孟祥武;劉棟;;基于改進蟻群算法的服務(wù)組合優(yōu)化[J];計算機學(xué)報;2012年02期

6 胡潔;孫靈芝;;Web服務(wù)組合方法綜述與分析[J];科技廣場;2011年01期

7 遲國倉;馮偉;宋世英;;基于Petri網(wǎng)制定作戰(zhàn)計劃的建模與優(yōu)化[J];中國科技信息;2010年22期

8 印瑩;張斌;張錫哲;;面向組合服務(wù)動態(tài)自適應(yīng)的事務(wù)級主動伺機服務(wù)替換算法[J];計算機學(xué)報;2010年11期

9 孟利霞;;基于JGraph動態(tài)繪制Web網(wǎng)絡(luò)拓撲圖的設(shè)計與實現(xiàn)[J];計算機應(yīng)用與軟件;2010年07期

10 胡佳;馮志勇;;一種基于抽象模板的語義Web服務(wù)組合框架[J];計算機應(yīng)用;2009年11期

，

本文編號：1719482