【摘要】：高校機(jī)構(gòu)知識庫是知識倉庫的一種主流應(yīng)用,自發(fā)展以來,在學(xué)術(shù)傳播、電子出版、長期保存、知識管理、促進(jìn)教育、科研評價(jià)、共享利用等方面發(fā)揮了重要作用。但是國內(nèi)高校機(jī)構(gòu)知識庫彼此獨(dú)立,學(xué)術(shù)資源無法共享,阻礙了學(xué)術(shù)資源的利用與傳播。隨著網(wǎng)絡(luò)數(shù)字化文獻(xiàn)信息資源的需求日益增大,各高校機(jī)構(gòu)知識庫的一個(gè)個(gè)資源孤島已經(jīng)不能滿足需求,資源的共建共享,為用戶提供一站式服務(wù)成為必然,本課題的目的是實(shí)現(xiàn)各機(jī)構(gòu)知識庫間互聯(lián)互通,從而為用戶提供資源集成的統(tǒng)一獲取服務(wù)。課題采用數(shù)據(jù)復(fù)制的方式建立集中式數(shù)據(jù)倉庫,將各機(jī)構(gòu)知識庫中的數(shù)據(jù)收割到數(shù)據(jù)集成中心。本課題采用OAI-PMH協(xié)議和METS協(xié)議,將對象數(shù)據(jù)封裝成METS文檔嵌入OAI記錄中,實(shí)現(xiàn)學(xué)術(shù)資源元數(shù)據(jù)和對象數(shù)據(jù)的聯(lián)合收割。同時(shí)為了提高對象數(shù)據(jù)收割的靈活性,提供兩種元數(shù)據(jù)類型etd和etds,他們都對OAI記錄中使用的元數(shù)據(jù)格式進(jìn)行定義,區(qū)別在于etds元數(shù)據(jù)類型只進(jìn)行元數(shù)據(jù)收割。在數(shù)據(jù)收割系統(tǒng)中,各機(jī)構(gòu)作為數(shù)據(jù)發(fā)布方借助OAICat實(shí)現(xiàn)OAI記錄的發(fā)布,數(shù)據(jù)集成中心作為收割方調(diào)用各機(jī)構(gòu)知識庫的OAI接口收割OAI記錄,從中解析出資源條目元數(shù)據(jù)和對象數(shù)據(jù),并保存到數(shù)據(jù)集成中心數(shù)據(jù)倉庫中。數(shù)據(jù)集成中心在完成元數(shù)據(jù)和對象數(shù)據(jù)收割后,對倉庫中某一學(xué)科分類的學(xué)術(shù)資源進(jìn)行語義分析,獲得領(lǐng)域關(guān)鍵詞庫,并在此基礎(chǔ)上實(shí)現(xiàn)學(xué)術(shù)資源間的語義關(guān)聯(lián),用戶在瀏覽學(xué)術(shù)資源時(shí)通過點(diǎn)擊已建立關(guān)聯(lián)的關(guān)鍵詞進(jìn)行快速的資源發(fā)現(xiàn),從而為用戶提供個(gè)性化知識服務(wù)。
[Abstract]:Institutional knowledge base is a mainstream application of knowledge warehouse. Since its development, it has played an important role in academic communication, electronic publishing, long-term preservation, knowledge management, promotion of education, evaluation of scientific research, and sharing and utilization. However, the institutional knowledge base is independent of each other, and academic resources can not be shared, which hinders the utilization and dissemination of academic resources. With the increasing demand of the network digital document information resources, the resource isolated islands of the institutional knowledge base of each university can no longer meet the demand. The co-construction and sharing of the resources becomes inevitable, which provides the one-stop service for the users. The purpose of this paper is to realize the interconnection and interworking among the institutional knowledge bases, thus providing users with unified access services for resource integration. A centralized data warehouse is established by data replication, and the data from each institutional knowledge base is harvested to the data integration center. In this paper, OAI-PMH protocol and METS protocol are used to encapsulate object data into METS document and embed it in OAI record to realize the joint harvesting of metadata and object data of academic resources. In order to improve the flexibility of object data harvesting, two metadata types, etd and etds, are provided to define the metadata format used in OAI records. The difference is that etds metadata types only harvest metadata. In the data harvesting system, each organization as the data publisher realizes the release of OAI records by means of OAICat, and the data integration center acts as the harvester to call the OAI interface of the institutional knowledge base to harvest OAI records. The metadata and object data of resource items are parsed and saved to the data warehouse of data integration center. After reaping metadata and object data, the data integration center carries on the semantic analysis to the academic resources classified by a certain discipline in the warehouse, obtains the domain keyword database, and realizes the semantic association between the academic resources on this basis. When users browse academic resources, they can quickly discover the resources by clicking on the related keywords, thus providing users with personalized knowledge services.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP311.13

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