It implements web crawling through distributed technology , and builds index database through accidence analyzing chinese characters separating unuseful words deleting etyma extracting index words selecting and lexicon . the level system uses new model of web accessing and level computation to build web level system so that the requirement for computer resources is greatly reduced 该搜索引擎使用分布式技术实现网页获取模块;通过词法分析、中文分词、无用词汇删除、词干提取、索引词条选择和词典等技术建立索引数据库;该搜索引擎的级别系统使用了新的网络访问模型和级别计算模型,大大降低了搜索引擎对于计算机资源的要求。
The paper also makes great work on the technologies of capturing speciality web information which involves proposing a model of speciality information capturing in the vector space , designing index database whose mainly content is information of specialty websites , developing robot algorithm and searching strategy to extract information of specialty domains 文章对专业信息捕获技术进行了研究,提出基于向量空间的网络专业信息获取模型,建立以面向领域网站内容为主的索引数据库,实现专业领域信息提取的robot爬行算法和专业搜索策略。
Based on the recent literatures on library and information science collected in database of national index to china newspapers & periodicals from 2001 - 2005 , applying bibliometrical statistical methods , this paper makes a comprehensive analysis on the distribution of time , authors , journals and the characteristics of thesis , which provides a reliable and valuable reference for the researchers on the information science 摘要通过对全国报刊索引数据库检索统计分析,以文献计量学的基本定律作为数据分析的基本方法,对2001年至2005年情报学研究论文进行统计分析,分别对年代分布、作者分布、期刊分布、和主题特征分布进行综合分析,以期为情报学学者们的研究提供参考。
This dissertation carries out its study of the specified gis and working ticket es in power plants , by mastering the fundamental principles and universal methods to set up gis and es , then it analyzes the data organization of mapinfo software in detail and puts forward the idea to establish an indexical database for the integrated system in order to connect the databases between the two system parts . it also completes the design of the system database 本文以火力发电厂gis和工作票专家系统为具体研究对象,在熟悉地理信息系统和专家系统原理和一般开发方法的基础上,详细分析了地理信息系统平台mapinfo空间数据库的组织方式,提出了在开发集成系统数据库时建立对象索引数据库来联系工作票专家系统数据库与地理信息系统空间数据库的方法,并完成了系统数据库的设计。
索引: index; indexing; key; repert ...数据库: data bank; data base; data p ...次级索引数据库: secondary index data base共享索引数据库: shared index data base; shared index database会计索引数据库: accounts index联用资料索引数据库: link data base索引数据库中的结果: lists in the whole liszt database liszt索引数据集: indexed data set索引数据名: index data name; indexed data name索引数据项: index data item索引数据存取法: access method for indexed data数据库索引: data base index; dbi database index; index (database)数据库;数据库: data bank数据库: data bank; data base; data pool; data library◇数据库管理系统 data base management system; 数据库计算机 data base computer引数: argument和颜色列表的索引数: index count数据库 (或数据库) 重组: database reorganization数据索引表: data directory数据库数据名: data base data namefirebird (数据库): firebird (database server)odbc数据库: odbc database安全数据库: safety database; security database暗礁数据库: reefbase - world conservation monitoring centre豹鲨数据库: leopard shark page备用数据库: standby database