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基于擴(kuò)展HTN規(guī)劃的物流Web服務(wù)組合研究

發(fā)布時(shí)間:2018-08-07 06:57
【摘要】:在經(jīng)濟(jì)全球化和電子商務(wù)的雙重推動(dòng)下,強(qiáng)化資源整合和物流全過程優(yōu)化是現(xiàn)代物流發(fā)展的必然趨勢(shì)。物流服務(wù)網(wǎng)絡(luò)化即是在這樣的大背景下誕生的一種新的物流模式。它通過互聯(lián)網(wǎng)跨區(qū)域的實(shí)現(xiàn)整個(gè)物流運(yùn)作過程中的信息傳遞,以信息引導(dǎo)物流過程,整合分散的物流資源,實(shí)現(xiàn)物流服務(wù)網(wǎng)絡(luò)化。隨著信息技術(shù)的進(jìn)步,物流企業(yè)開始應(yīng)用信息技術(shù)成果構(gòu)建網(wǎng)絡(luò)化物流服務(wù)系統(tǒng)。傳統(tǒng)的EDI交換技術(shù)、網(wǎng)絡(luò)GPS技術(shù)、XML等新工具操作復(fù)雜,,投入費(fèi)用高,不能適應(yīng)環(huán)境的動(dòng)態(tài)變化,使得目前的物流服務(wù)網(wǎng)絡(luò)化系統(tǒng)開放性和共享程度還不是很理想,大規(guī)模應(yīng)用受到限制。Web服務(wù)組合技術(shù)以其技術(shù)和成本優(yōu)勢(shì)為物流服務(wù)網(wǎng)絡(luò)化提供了新的思路。 本文提出基于擴(kuò)展HTN規(guī)劃的物流Web服務(wù)組合模型,即是將物流服務(wù)形式化描述為Web服務(wù),通過Web服務(wù)組合相關(guān)技術(shù),實(shí)現(xiàn)跨區(qū)域、跨系統(tǒng)平臺(tái)物流服務(wù)組合。然而要實(shí)現(xiàn)物流Web服務(wù)組合必然要面臨三個(gè)問題:①物流Web服務(wù)和物流需求統(tǒng)一的形式化描述以及物流需求模板的建立;②物流服務(wù)的發(fā)現(xiàn)和匹配,即從大量的物流Web服務(wù)中發(fā)現(xiàn)滿足約束條件要求的物流Web服務(wù)。③物流Web服務(wù)組合,即將Web服務(wù)單元按照需求執(zhí)行序列進(jìn)行組合,并保證服務(wù)組合的整體最優(yōu)。本文從以下幾個(gè)方面解決上述問題:①基于Web服務(wù)組合總體框架構(gòu)建了物流Web服務(wù)組合框架,將服務(wù)組合過程分為物流需求解析、服務(wù)發(fā)現(xiàn)和組合、服務(wù)組合執(zhí)行監(jiān)控和執(zhí)行效果反饋模塊。②基于物流Web服務(wù)和物流需求描述參數(shù)形式給出了概念、區(qū)間、模糊函數(shù)相似度計(jì)算方法,為物流Web服務(wù)的匹配提供了依據(jù)。③針對(duì)物流需求交互和物流Web服務(wù)沖突建立了物流Web服務(wù)組合流程,針對(duì)物流Web服務(wù)的動(dòng)態(tài)變化設(shè)計(jì)了服務(wù)組合執(zhí)行效果反饋流程。④對(duì)HTN任務(wù)規(guī)劃方法進(jìn)行領(lǐng)域知識(shí)擴(kuò)展和規(guī)劃過程控制擴(kuò)展,使得任務(wù)網(wǎng)絡(luò)描述能夠表達(dá)時(shí)間、資源和滿意度約束。提出了基于擴(kuò)展HTN的物流Web服務(wù)組合方法。規(guī)劃過程中需求規(guī)劃與服務(wù)匹配同時(shí)進(jìn)行,過濾不滿足約束條件要求的規(guī)劃分支,縮小規(guī)劃空間,提高規(guī)劃效率。 本文最后,基于擴(kuò)展HTN規(guī)劃的物流Web服務(wù)組合流程,在經(jīng)典HTN規(guī)劃引擎SHOP2的基礎(chǔ)上進(jìn)行二次開發(fā),對(duì)擴(kuò)展的HTN規(guī)劃服務(wù)組合方法進(jìn)行分析和驗(yàn)證。
[Abstract]:Under the dual impetus of economic globalization and electronic commerce, it is the inevitable trend of modern logistics development to strengthen the integration of resources and optimize the whole process of logistics. Logistics service network is a new logistics mode born under this background. It realizes the information transmission in the whole logistics operation process through the Internet, guides the logistics process with the information, integrates the dispersed logistics resources, and realizes the logistics service network. With the development of information technology, logistics enterprises begin to construct network logistics service system with the application of information technology. New tools, such as traditional EDI exchange technology, network GPS technology and so on, have complex operation, high input cost, and can not adapt to the dynamic change of environment, which makes the current logistics service network system open and sharing degree is not very ideal. Large-scale application of Web service composition technology provides a new idea for logistics service network because of its advantages of technology and cost. In this paper, a logistics Web service composition model based on extended HTN programming is proposed, in which logistics services are formally described as Web services, and cross-regional and cross-system platform logistics service composition is realized through Web service composition technology. However, in order to realize logistics Web service composition, we must face three problems: 1 Logistics Web service and logistics demand unified formal description, and the establishment of logistics demand template and the discovery and matching of logistics service. From a large number of logistics Web services, the logistics Web service 3 logistics Web service composition is found, that is, the Web service unit is composed according to the demand execution sequence, and the whole service composition is guaranteed to be optimal. Based on the general framework of Web service composition, this paper constructs a logistics Web service composition framework from the following aspects: 1. The process of service composition is divided into logistics demand analysis, service discovery and composition. Based on logistics Web service and logistics requirement description parameter form, this module gives the concept, interval and fuzzy function similarity calculation method. In order to match logistics Web services, a logistics Web service composition process is established for logistics demand interaction and logistics Web service conflict. According to the dynamic changes of logistics Web services, the feedback flow of service composition execution effect is designed. 4. The domain knowledge extension and planning process control extension of HTN task planning method are carried out, so that the task network description can express the time. Resource and satisfaction constraints. A method of logistics Web service composition based on extended HTN is proposed. In the planning process, the requirement planning and the service matching are carried out simultaneously, which filter out the planning branches which do not meet the requirements of the constraint conditions, reduce the planning space and improve the planning efficiency. Finally, the logistics Web service composition process based on extended HTN programming is redeveloped on the basis of classical HTN programming engine SHOP2, and the extended HTN planning service composition method is analyzed and validated.
【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;F253.9

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