共查询到19条相似文献，搜索用时 502 毫秒
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网络文本数据搜索引擎与搜索技术 总被引：3，自引：0，他引：3
This paper describes the functions, characteristics and operating principles of search engines based on Web text, and the searching and data mining technologies for Web-based text information. Methods of computer-aided text clustering and abstacting are also given. Finally, it gives some guidelines for the assessment of searching quality. 相似文献
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浅析网络信息挖掘 总被引：1，自引：0，他引：1
With the further development of the Intemet and e-commerce,using mining technologies to acquire knowledge from Web data is a hot and rapidly growing field. This paper primarily analyzes Intemet information mining from the perspectives such as its research background, basic signification, characteristics, types and trends, expecting to improve Web mining research and its application in China. 相似文献
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因特网上的图像搜索引擎 总被引：8，自引：0，他引：8
The operating principle of Web-based image search engines is briefly described. A detailed evaluation of some of image search engines is made. Finally, the paper points out the deficiencies of the present image search engines and their development trend. 相似文献
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Web环境下关联数据的应用 总被引：1，自引：0，他引：1
阐述了关联数据的基本理论、4个基本原则和核心的实现技术,对比分析了当前Web资源与关联数据应用之后所形成的数据Web之间的异同,然后对Web环境下关联数据的两方面应用进行分析研究,最后,给出关联数据应用所面临的挑战。Abstract： The paper expatiates on the basic theory,4 basic principles and the core implementation technologies of linked data.It also compares and analyzes the differences and similarities between the current Web resources and the Web of data after using the linked data.The paper then analyzes and studies the application of linked data in 2 aspects in the Web environment.Finally,the challenges faced by the application of linked data are described. 相似文献
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The characteristics and development ofcluster technology are briefly introduced. The requirement for cluster technolgv, the grade of availability, the advantage of cluster technology and the system structure model are discussed. Finally,the article specifies 3 data sharing models,that is,Mirror,Share Nothing and Share All. 相似文献
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《中国科学院院刊(英文版)》2004,(4)
The CAS Symposium on DataMining and KnowledgeManagement was held fromJuly 12 to 14 in Beijing.As a forum for exchanging re-search findings and case studies inthe field, the conference addressedissues in data mining technology,knowledge management tools andtheir real-life applications in the con-text of global economy. More than60 Chinese and foreign scholars par-ticipated in the meeting.Under the joint sponsorship ofCAS, the National Natural ScienceFoundation of China and U.S. Uni-ver… 相似文献
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《中国专利与商标》2007,(2)
The case in brief The plaintiff the BP Co.,Ltd.(the BP for short)filed with the Trademark Office two applications for registration of the trademarks"BEYOND PETRONEUM"and"超越石油"(the trademarks in suit)(the Chinese characters"超越"are equiv- alent to the English word"BEYOND"and the Chinese char- acters"石油"are equivalent to the English word"PETRONEUM")in goods of class 4 of the International Clas- sification:industrial oil and wax(raw material).The Trade- mark Office held that the two trademarks were similar to trademark No.1720395"超越矿业and device"(meaning"beyond mining industry")(reference trademark 1)regis- tered in the goods of wax used on conveying belt and trade- mark No.956456"超越and the device"(reference trade- mark 2)registered in goods of industrial grease and oil,and refused said applications.The trademarks in suit and refer- ence trademarks are shown as follows: 相似文献
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《中国科学院院刊(英文版)》2005,(3)
The CAS Beijing Genomics Institute (BGI) and the Danish Committee of Pig Breeding and Production (DCPBP) jointly announced recently the pub- lic release of pig genomic sequences. The released sequence data include 3.84 million pieces of the genomes of five different do- mestic pig breeds from Europe and China. The data are generated from the first large-scale pig genome se- quencing effort, the Sino-Danish Pig Genome Project, started in 2001 on the basis of a long-standing col- labor… 相似文献
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分析了管理信息系统的现状与不足,在作者单位原有的管理系统基础之上,通过对数据仓库需求分析,提出将数据挖掘技术应用于高校管理系统中。按照数据仓库的设计准则,探讨了数据仓库的模型设计、结构设计。基于SQL Server 2005建立数据仓库,包括学生就业指导和成绩分析两个主题数据集,描述了数据仓库模型设计、结构设计。 相似文献
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基于XML的网页数据挖掘 总被引：1，自引：0，他引：1
随着Internet的迅速发展,使得数据丰富而信息贫乏这对矛盾显得日益突出,数据挖掘技术正是应了这一需求而结合了机器学习、模式识别、统计学、人工智能、神经网络等多学科而出现的一项新技术,基于Web的数据挖掘是数据挖掘技术在网络信息处理中的应用。本文叙述了Web数据挖掘的概念、分类、技术等,重点讨论了基于XML语言的Web数据挖掘技术,解决了Internet上绝大多数非结构化甚至是无结构的、Web信息的组织结构性差而导致的Web数据挖掘困难的问题。 相似文献
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Web数据挖掘技术是实现个性化科研协同服务的关键技术。本文以学科馆员协同高校科研教师完成重大科研项目为目标,以Web数据挖掘技术为基础,综述了Web数据挖掘的概念、研究方法、国内外研究现状以及学科化科研协同服务的内涵。设计了科研协同服务平台及其运行机制,力求为学科馆员融入高校科研一线提供新的思路和决策。 相似文献
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数据质量影响用户数据的整合过程与结果、数据库的应用性、商业智能开发以及商业品牌。由信息系统呈现的数据,为满足用户的需求并将其做有效的应用,基础均在于数据的质量。针对数据质量的评估方式、管理架构和评估要素,建构数据质量评价指标体系,为提高数据质量从而改善图书馆信息服务提供参考。 相似文献
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基于数据仓库的电子政务决策支持系统 总被引：4，自引：0，他引：4
随着电子政务应用的不断深入，对电子政务决策支持系统的需求也迫在眉睫。如何构建有效的数据平台，使之为政府决策提供支持是一个较为复杂的问题。本文提出以数据仓库技术为基础建设电子政务决策支持系统，并对系统的技术架构和总体结构进行了研究。 相似文献
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基于数据仓库技术,在系统需求分析的基础上,设计了质量信息管理系统的总体架构。构建了数据仓库概念模型、逻辑模型和物理模型。采用实例方式介绍了事实表和维表设计方法与流程。对质量信息管理系统的建设具有一定的参考作用。 相似文献
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