基于本体的垂直搜索引擎研究
发布时间：2018-09-10 19:36
【摘要】： 随着电子消费品市场的迅速发展,电子消费品的信息资源越来越多,通用搜索引擎在获取信息量方面能够满足人们的需要,但是对于电子消费品市场这样一个发展迅速、信息日新月异的领域,获取的信息质量比数量更为重要,而在获取信息质量这方面正是传统的搜索引擎的不足,为了获得更有用的信息,人们提出了垂直搜索,垂直搜索是用来给某一特定领域、特定人群或特定需求提供有一定价值的信息和相关服务的。本体是对领域知识概念的抽象和描述,基于本体的搜索引擎能够实现语义搜索,这一点正好弥补了通用搜索引擎基于关键字搜索的不足,能够解决通用搜索引擎查询效果不够理想的问题,因此,将本体与搜索引擎结合,能够更好的实现垂直搜索引擎。 本文首先介绍了搜索引擎的研究现状,重点介绍了垂直搜索引擎技术,分析了本体与垂直搜索引擎相结合的意义,接下来介绍了本体的概念、分类、描述语言,在对目前主要的本体构建方法进行比较研究后,提出了一种适合于电子消费品领域本体的构建方法,并且选用Protégé3.3.1构建领域本体,详细介绍了构建电子消费品领域本体库的过程,为类似领域本体的构建提供了参考。 最后以构建的领域本体为基础,开发基于本体的垂直检索系统的实验系统,通过系统运行分析,得出实验系统比传统的基于关键字的查询方法具有更高的查全率和查准率。因此研究基于本体的垂直检索具有很强的理论和实际意义。
[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.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：TP391.3
本文编号：2235412
[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.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：TP391.3
【引证文献】
相关博士学位论文 前1条
1 郑文良;基于简单本体的农业P2P搜索引擎关键技术研究[D];沈阳农业大学;2013年
相关硕士学位论文 前3条
1 杨海军;城市百科知识库自动构建系统[D];哈尔滨工业大学;2010年
2 乔卫;基于领域本体的XML语义信息抽取的研究与实现[D];武汉理工大学;2009年
3 刘兴涛;基于本体的垂直搜索引擎研究[D];山东大学;2009年
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