【摘要】： 隨著電子消費(fèi)品市場(chǎng)的迅速發(fā)展,電子消費(fèi)品的信息資源越來(lái)越多,通用搜索引擎在獲取信息量方面能夠滿足人們的需要,但是對(duì)于電子消費(fèi)品市場(chǎng)這樣一個(gè)發(fā)展迅速、信息日新月異的領(lǐng)域,獲取的信息質(zhì)量比數(shù)量更為重要,而在獲取信息質(zhì)量這方面正是傳統(tǒng)的搜索引擎的不足,為了獲得更有用的信息,人們提出了垂直搜索,垂直搜索是用來(lái)給某一特定領(lǐng)域、特定人群或特定需求提供有一定價(jià)值的信息和相關(guān)服務(wù)的。本體是對(duì)領(lǐng)域知識(shí)概念的抽象和描述,基于本體的搜索引擎能夠?qū)崿F(xiàn)語(yǔ)義搜索,這一點(diǎn)正好彌補(bǔ)了通用搜索引擎基于關(guān)鍵字搜索的不足,能夠解決通用搜索引擎查詢效果不夠理想的問題,因此,將本體與搜索引擎結(jié)合,能夠更好的實(shí)現(xiàn)垂直搜索引擎。 本文首先介紹了搜索引擎的研究現(xiàn)狀,重點(diǎn)介紹了垂直搜索引擎技術(shù),分析了本體與垂直搜索引擎相結(jié)合的意義,接下來(lái)介紹了本體的概念、分類、描述語(yǔ)言,在對(duì)目前主要的本體構(gòu)建方法進(jìn)行比較研究后,提出了一種適合于電子消費(fèi)品領(lǐng)域本體的構(gòu)建方法,并且選用Protégé3.3.1構(gòu)建領(lǐng)域本體,詳細(xì)介紹了構(gòu)建電子消費(fèi)品領(lǐng)域本體庫(kù)的過(guò)程,為類似領(lǐng)域本體的構(gòu)建提供了參考。 最后以構(gòu)建的領(lǐng)域本體為基礎(chǔ),開發(fā)基于本體的垂直檢索系統(tǒng)的實(shí)驗(yàn)系統(tǒng),通過(guò)系統(tǒng)運(yùn)行分析,得出實(shí)驗(yàn)系統(tǒng)比傳統(tǒng)的基于關(guān)鍵字的查詢方法具有更高的查全率和查準(zhǔn)率。因此研究基于本體的垂直檢索具有很強(qiáng)的理論和實(shí)際意義。
[Abstract]:With the rapid development of electronic consumer goods market, the information resources of electronic consumer goods are more and more. The general search engine can meet the needs of people in obtaining the amount of information, but for the electronic consumer goods market such a rapid development, In the field of information changing with each passing day, the quality of information obtained is more important than the quantity, and the traditional search engine is insufficient in obtaining the quality of information. In order to obtain more useful information, people put forward vertical search. Vertical search is used to provide valuable information and related services to a specific field, specific population or specific needs. Ontology is the abstraction and description of domain knowledge concept. Ontology-based search engine can realize semantic search, which makes up the deficiency of general search engine based on keyword search. It can solve the problem that the query effect of general search engine is not ideal, so the combination of ontology and search engine can better realize vertical search engine. This paper first introduces the research status of search engine, focuses on the vertical search engine technology, analyzes the significance of the combination of ontology and vertical search engine, and then introduces the concept, classification, description language of ontology. After comparing and studying the main ontology construction methods, this paper puts forward a method suitable for building domain ontology of electronic consumer goods, and selects Prot 茅 g 茅 3.3.1 to construct domain ontology, and introduces the process of constructing domain ontology library of electronic consumer goods in detail. It provides a reference for the construction of similar domain ontology. Finally, based on the domain ontology constructed, the experimental system of vertical retrieval system based on ontology is developed. Through the system operation analysis, it is concluded that the experimental system has higher recall and precision than the traditional keyword-based query method. Therefore, the study of ontology-based vertical retrieval has strong theoretical and practical significance.
【學(xué)位授予單位】：西北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2008
【分類號(hào)】：TP391.3

【引證文獻(xiàn)】

相關(guān)博士學(xué)位論文 前1條

1 鄭文良;基于簡(jiǎn)單本體的農(nóng)業(yè)P2P搜索引擎關(guān)鍵技術(shù)研究[D];沈陽(yáng)農(nóng)業(yè)大學(xué);2013年

相關(guān)碩士學(xué)位論文 前3條

1 楊海軍;城市百科知識(shí)庫(kù)自動(dòng)構(gòu)建系統(tǒng)[D];哈爾濱工業(yè)大學(xué);2010年

2 喬衛(wèi);基于領(lǐng)域本體的XML語(yǔ)義信息抽取的研究與實(shí)現(xiàn)[D];武漢理工大學(xué);2009年

3 劉興濤;基于本體的垂直搜索引擎研究[D];山東大學(xué);2009年

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本文編號(hào)：2235412