【摘要】：當(dāng)前的時(shí)代是一個(gè)互聯(lián)網(wǎng)迅速發(fā)展的時(shí)代，互聯(lián)網(wǎng)上充滿了各種類型的信息資源，并且這些信息資源的數(shù)量正迅速膨脹。正是因?yàn)檫@個(gè)世界的不斷信息化、數(shù)字化的發(fā)展，搜索引擎技術(shù)就成為了人們獲取網(wǎng)絡(luò)信息資源的重要途徑，它的重要性深入人心。而普通的通用搜索引擎已經(jīng)很難快速、準(zhǔn)確的找到用戶需要的網(wǎng)頁(yè)，，所以垂直搜索引擎的產(chǎn)生就成為了必然。 與通用搜索引擎相比較，垂直搜索引擎可以提供更加專業(yè)、精確的和有一定深度的檢索服務(wù)。但從垂直搜索引擎與通用搜索引擎的相關(guān)關(guān)鍵技術(shù)上來(lái)講，他們?cè)诖朔矫孢�是十分相似的，它們主要的區(qū)別，還是在于是否在網(wǎng)頁(yè)信息抽取時(shí)進(jìn)行結(jié)構(gòu)化抽取，形成結(jié)構(gòu)化的信息數(shù)據(jù)。所以，垂直搜索引擎雖然在一定程度上改善了檢索結(jié)果的效果，但仍舊沒有擺脫依靠關(guān)鍵詞檢索的方式，滿足不了用戶進(jìn)行語(yǔ)義檢索的需求。而隨著本體技術(shù)在各個(gè)領(lǐng)域的應(yīng)用逐漸廣泛，同時(shí)為了滿足某些特定領(lǐng)域、有著特定需求的用戶，就出現(xiàn)了基于本體的垂直搜索引擎研究。 本文就是對(duì)本體與垂直搜索引擎的相關(guān)理論知識(shí)、設(shè)計(jì)理念及相關(guān)的實(shí)現(xiàn)技術(shù)等做了介紹及研究，希望通過(guò)本體模型與垂直搜索引擎的結(jié)合來(lái)提高搜索的查全率、查準(zhǔn)率，最后主要的工作在于實(shí)現(xiàn)領(lǐng)域本體構(gòu)建并設(shè)計(jì)實(shí)現(xiàn)簡(jiǎn)單模型。 最后通過(guò)以上理論的研究，運(yùn)用本體構(gòu)建工具Protégé4.0構(gòu)建了影院領(lǐng)域本體，對(duì)基于本體的垂直搜索引擎的模型進(jìn)行分析設(shè)計(jì)。在總體設(shè)計(jì)方面來(lái)用的是模塊化思想，垂直搜索引擎被分為信息抓取系統(tǒng)、信息預(yù)處理子系統(tǒng)、索引子系統(tǒng)和檢索子系統(tǒng)，各子系統(tǒng)相對(duì)獨(dú)立。
[Abstract]:The current era is an era of rapid development of the Internet, the Internet is full of various types of information resources, and the number of these information resources are expanding rapidly. Because of the constant information and the development of digitization in this world, search engine technology has become an important way for people to obtain network information resources, and its importance is deeply rooted in people's hearts. But the common general search engine has been very difficult to quickly and accurately find the web pages that users need, so the vertical search engine has become inevitable. Vertical search engines can provide more professional, accurate and in-depth search services than general search engines. But from the point of view of the key technologies of the vertical search engine and the general search engine, they are very similar in this respect. The main difference between them is whether to carry out structured extraction in the process of web page information extraction. Form structured information data. Therefore, the vertical search engine has improved the result of retrieval to some extent, but still can not get rid of the way of relying on keyword search, which can not meet the needs of users for semantic retrieval. With the wide application of ontology technology in various fields, in order to meet the specific needs of users in certain areas, there is a vertical search engine research based on ontology. This paper introduces and studies the related theory knowledge, design idea and related implementation technology of ontology and vertical search engine, hoping to improve the recall and precision of search through the combination of ontology model and vertical search engine. Finally, the main work is to build domain ontology and design and implement a simple model. Finally, through the research of the above theory, we use Prot 茅 g 茅 4.0 to construct the domain ontology of cinema, and analyze and design the model of vertical search engine based on ontology. The vertical search engine is divided into information capture system, information preprocessing subsystem, index subsystem and retrieval subsystem, each subsystem is relatively independent.
【學(xué)位授予單位】：東北師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：G254.336

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