The dissertation suggests a personalized internet information retrieval system ( purs ) , which integrates internet information inquiry and collection so as to establish a new type of user interest orientated information service system 提出了一种个性化网络信息检索系统( personalizedinternetinformationretrievalsystem ，以下简称piirs ) ，将网络信息查询与收集有机结合起来，建立面向用户兴趣的新型信息服务系统。
After reformed for adapting to network , the traditional retrieval language can become the most important and efficient way to organizing internet information resources for the present and future period . it can still supply language guarantee for internet information retrieval 传统检索语言经过网络适应性改造后，能够成为目前及将来相当时期内最主要、最重要、最有效的网络信息资源组织的方法，依然能为网络信息检索提供语言保证。
The second section analyzes the theory of ir and technology of search engine . this section also discusses some key technologies used in web information retrieval , including web information indexing , information filtering , web mining , ontology , intelligent agents , and web search algorithms 本文系统阐述了信息检索的原理和搜索引擎技术，并对网络信息索引、本体论、网络挖掘、信息过滤、智能代理、网络信息检索算法做了深入的剖析。
This thesis discusses the technology of web information retrieval both on theory and application and puts forward a framework for irobot system . the thesis is divided into three sections . the first section is an introduction , in which i discusses the present situation of the web information retrieval and analyses some existent problems 本文从理论和实践两个方面探讨了网络信息检索技术以及检索技术在搜索引擎系统中的应用，提出了将基于内容和基于链接的搜索技术相结合的思想，设计了一个面向主题的搜索引擎irobot系统，阐述了它的结构和设计开发原理。
Through the experiences and skills obtained in the retrieval practices , this paper introduces the retrieval functions of the search engine and the characteristics , usages and retrieval methods of the retrieval tools for the network information , in the light of the characteristics of network news , points out several methods and approaches for seaching the important web sites 通过检索实践得到的经验和技巧,介绍了搜索引擎的检索功能和网络信息检索工具的特点、使用方法,并针对网络新闻的特点,指出了几种查找重要站点的方法和途径。
The meanings of this paper lie in the development and research of chinese libraries and chinese archives by through the theoretical research on xmarc . it will produce the marked effect for xmarc concentration information to be researched and practiced . the new solving schema of theme classification and the subject indexing of chinese information has been explored through excavating xmarc theme information voluntarily 论文工作的意义在于通过对xmarc的理论研究，将我国图书、档案学科领域元数据的研究引向深入，探索国内外marc元数据集中信息描述的机制，这些研究取得了极有价值的实践成果;通过自动发掘xmarc主题信息，为中文信息的主题标引、主题分类和主题检索自动化探索出新的解决方案，从而增强我国网络信息检索工具的实用性和提高信息检索的质量。
This part enumerates the major applications of network measurement in specific areas and discusses the extensive application perspectives of webometrics : in the resource construction and management of the digital library , the construction of the network information resources , the progress of the informatics , the acceleration of the development of network information search technology , as well as the direction of network construction and site management , the resolving of some social problems and the promotion of the healthy network development by studying the internet users ' information demand and exploring habits 通过研究网络信息资源，提高情报科学调研水平。网络计量学指导网络搜索引擎研究开发工作，推动网络信息检索技术发展。通过研究用户的信息需求和上网习惯来指导网络建设和网站管理、帮助解决社会问题、促进网络健康发展等方面有着广阔的应用前景。
The author wants to look forward to the latest trend of development in this field by studying the theoretic and practical achievement in information retrieval language both at home and abroad in the time of internet . this paper is made up of five parts . the first part analyses the effects of information retrieval language in network condition ; the second part introduces the achievements in electronic traditional classification and the using of traditional classification in network and in information retrieval tool ; the third part introduces the achievements in electronic traditional subject and the using of traditional subject in network and in information retrieval tool ; the forth part is about natural language processing and natural language retrieval which includes basic principles of natural language processing and the using of information retrieval ; finally , the author points out that the new development of information retrieval language includes metadata and the integration of the classification - subject - natural language 本文主要研究网络环境下信息检索语言的发展，主要内容包括五部分：第一部分分析了网络环境对信息检索语言的影响；第二部分是网络环境下分类检索语言的应用，包括传统分类法电子化及在网络上的应用，网络信息检索工具中的应用；第三部分是网络环境下主题检索语言的应用，包括传统叙词表电子化及在网络上的应用，在网络信息检索工具中的应用；第四部分是自然语言处理与自然语言检索，包括自然语言处理的基本原理及在信息检索中的应用，国内外自然语言检索进展；作者在论文最后指出，在网络环境下信息检索语言新发展有：元数据研究；分类-主题-自然语言一体化，分析国外一体化系统实例：一体化医学语言系统umls ，国内一体化系统实例： 《中国财经报刊数据库》检索系统；并指出学科?事物概念组配型检索语言是理想发展模式。
Recently , date mining technology based on web has abstract the interest of many researchers . possession of lower data is the precondition of mining higher knowledge , and net information retrieval technique has become the urgent issue of date mining technology based on web , so the paper explore the research of it and focus on the information retrieval based on web . with the expectation of a intelligent information retrieval system , which can catch the interests of customers with good precision and capability , we give deep research to some of the information retrieval technique 近几年来， web数据挖掘技术引起了研究人员的关注，低层信息的占有是发掘高层知识的前提，网络信息检索技术便成为目前web数据挖掘的一个迫切需要深入研究的问题，因此，本文选择web数据挖掘作为研究对象，重点研究的是基于web的信息检索技术，对其中的一些相关内容进行了深入研究，旨在研究设计一种性能较好、能捕捉用户兴趣、提高精度的智能信息检索系统，更好的满足用户的需要。
Some famous browse network information search tools , such as yahoo , excite , galaxy and most comprehensive search tools actually draw lessons from the idea of organizing and revealing information by traditional information retrieval language consciously or unconsciously . for example , askjeeves is a kind of nature language search engines 著名的浏览型网络信息检索工具如yahoo 、 eblast 、 galaxy和大部分综合型搜索引擎实际上都是自觉或不自觉地借鉴了传统情报检索语言组织和揭示信息的思想， altavista集成的askjeeves就是自然语言搜索引擎。
