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基于内容的智能网络多媒体信息过滤检索 总被引:7,自引:2,他引:7
The paper discusses the construction of a content-based intelligent system that performs multimedia information filtering and retrieving on the Internet. The system disassembles the multimedia information into different media objects and describes them with vectors for content-based retrieval. In the user study module, the system uses the BP neural network to clarify the user interests for intelligent filtering and retrieving. 相似文献
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基于因特网的自动化和智能化信息搜集技术 总被引:2,自引:1,他引:2
In order to make the information acquisition work of libraries more effectively, this paper proposes an automatic intelligent system based on Internet and explores the concepts and principles of meta search and document classifi-elation technologies. 相似文献
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万维网上的全文检索技术及其发展 总被引:6,自引:2,他引:4
The conception and characteristics of full text retrieval are expounded. The basic structure and key technologies of a full text retrieval system on WWW are put forward. According to the development direction of intelligent information retrieval, the author discusses three approaches of combining artificial intelligence with information retrieval. 相似文献
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Based on a summary of the present patent statistical information on Internet, this article puts forward an idea of developing Chinese patent statistical information on Internet,that is, developing a Chinese patent statistics system. It also discusses the function of this system and the way to realize and use this system. 相似文献
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企业信息系统安全 总被引:2,自引:0,他引:2
With a discussion on the importance of securing the enterprise network information system, this paper analyzes the means by which the hackers attack the enterprise information system. It introduces the key technologies for securing the enterprise information system,and puts forward some important ideas about the security of enterprise information system. 相似文献
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管窥微观信息经济学 总被引:1,自引:0,他引:1
This essay examines the origin and development of micro-economics of information from the perspective of the development history of western economies. It considers the emergence and development of micro-economies of information as a challenge to the traditional economics. Based on this, the essay expounds the focal point of the research on micro-economics of information and its significance to China' s reform of economic system and the informatization of economy. 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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IA应用研究--我国政府网站考察与评价 总被引:20,自引:0,他引:20
Issuing government information is a major task of the government Website. So it‘‘s important that the government Website is organized in accordance with the users‘‘ need and habit. In this article, the theory of Information Architecture (IA) is used to examine and evaluate some government Websites in an attempt to investigate some elements of government Websites such as the navigation system, information retrieval method and ways of information organizing and labeling. 相似文献
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中美国家信息政策比较研究 总被引:4,自引:0,他引:4
The paper makes a comparison between China and USA in formulating national information policies, such as enviromnent, goal, management system, organization, content, participating degree by government, etc. Meanwhile,it gives some suggestiom as to how to formulate information policies favorable for the development of modem information re-sources. 相似文献
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数字鸿沟的本质解析 总被引:1,自引:0,他引:1
随着社会信息化的推进,数字鸿沟问题日益凸显,严重影响了和谐社会的构建,要想从根本上弥合数字鸿沟就必须剖析其本质。数字鸿沟本质上是由技术、经济、知识和社会4个层面构成的综合性的差距。在技术层面上,它反映了不同主体在接入新兴信息技术方面存在的差距,是新兴信息技术普及过程中出现的"技术鸿沟";在经济层面上,它反映了国际国内经济不平等和贫富差距在信息时代的延续,是信息时代经济发展进程中出现的"经济鸿沟";在知识层面上,它反映了不同群体使用新兴信息技术获取和利用信息资源方面的差距,是信息主体获取和利用信息资源过程中出现的"知识鸿沟";在社会层面上,它反映了信息社会的阶层分化和社会分化现象,是信息社会不平等导致的"社会鸿沟"。Abstract: With the development of social informatization,the digital divide problem figures increasingly prominently and affects the construction of the harmonious society seriously.In order to close the digital divide fundamentally,it's necessary to anatomize its essence.Digital divide is essentially a comprehensive gap which consists of factors in the technical,economic,knowledge and social aspects.In technical aspect,it reflects the differences among different agents to get access to new information technologies,and it's the "technological gap" which appears in the popularization process of new information technologies.In economic aspect,it reflects the international and domestic economic inequality and the continuation of polarization of poor and rich in the information age,and it's the "economic gap" which appears in the economic development process in the information age.In knowledge aspect,it reflects the differences among different groups to use new information technologies to obtain and utilize information resources,and is the "knowledge gap" which appears in the information resources acquisition and utilization process by information agents.In social aspect,it reflects the stratum differentiation and social differentiation in the information society,and is the "social gap" caused by the inequality of the information society. 相似文献
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蓬勃发展的中国信息服务业 总被引:1,自引:2,他引:1
本文论述了当前我国信息服务业发展的特点;未来信息服务业的发展趋势以及进一步推动信息服务业发展的策略原则;指出大力发展信息服务业对于促进我国社会主义现代化事业的进程具有重大而深远的意义。 相似文献
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信息集成服务的含义、发展与主要类型 总被引:2,自引:0,他引:2
信息集成服务已成为图书馆用户服务发展的重要趋势。文章首先分析了信息集成服务的含义与发展动因,并根据信息集成服务的出发点和侧重点不同,对为以资源为中心的、以技术为中心的、以机构合作为中心的和以用户为中心的信息集成服务类型进行了分析和比较。 相似文献
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论信息服务中的用户满意 总被引:28,自引:2,他引:28
The article discusses the status of user satisfaction in information service and information management. Based on an analysis of the property and structure of the user satisfaction demand, it also introduces several methods for the evaluation of user satisfaction. 相似文献
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论面向信息焦虑的知识信息服务 总被引:3,自引:0,他引:3
信息焦虑不仅严重影响用户信息利用效度,而且危害其身心健康。知识信息服务必须直面用户信息焦虑的真实存在,以多层次、不同产品形式的高质量服务帮助用户摆脱信息焦虑的困扰。本文首先介绍了信息焦虑的具体表现和诱因,然后依据布鲁克斯方程和用户信息利用的微观过程,揭示了信息焦虑的根源,在此基础上,探讨了以减少和消除信息焦虑为目的的知识信息服务的产品形式。 相似文献
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我国科技信息事业发展的轨迹——从信息服务走向知识服务 总被引:1,自引:0,他引:1
由信息服务向知识服务转型成为我国科技信息界和图书情报学界共同关注的热点问题。本文通过辨析信息服务、情报服务、知识服务三者之间的区别与内在关联,指出我国科技信息服务从一开始就具备了知识服务的某些特性,由信息服务、情报服务向知识服务发展是科技信息事业的自然过渡和必然要求。 相似文献
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Web2.0模式对图书馆信息服务的挑战与机遇 总被引:20,自引:1,他引:20
Web2.0是网络发展的新模式,它强调用户服务与用户参与。网络时代对图书馆提出了挑战,图书馆要围绕用户需求进行制度、理念、人才、技术各方面的创新,让用户参与信息资源的建设。 相似文献