共查询到19条相似文献，搜索用时 531 毫秒
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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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基于颜色/形状直方图的图像检索方法 总被引：1，自引：0，他引：1
Content-based retrieval technology is widely used in multimedia databases.Some image databases use the color of image as the main retrieving content feature.Shape feature is also used to query image, such as moment variant,rotating angle, etc. In this article, a new approach is presented to retrieve image using the color and shape histogram in-formation. The color/shape-based retrieval technology has the advantages of accelerating the retrieving speed and resisting the image noise. 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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数字图书馆个性化信息推荐系统研究 总被引：25，自引：2，他引：25
In order to provide individual information service in digital library, it's necessary to develop a personal-ized recommender system. Based on information retrieval, information filtering and coUaborative filtering technologies, this article gives some examples of the recommender system and analyzes their key technologies. 相似文献
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学科交叉与信息自动检索--科学发展呼唤新的信息自动检索工具 总被引：4，自引：0，他引：4
The intercrossing of disciphnes is an important impetus of scientific development. The existing automatic information retrieval systems are not propitious for the generation of new ideas and the interdisciplinary multiplication as they are developing towards more intelligent, knowledgeable and specialized ones. The scientific development calls for a new automatic information retrieval tool. The research will be a comprehensive subject involved with many disciplines and rields, and need to be conducted in order and step by step. 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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How to effectively use the special fund for importing liberal arts books is an important problem. In this paper, two basic indices, information quantity and information value, are proposed. The system of factors involved in the actual measurement and the computing formulas are described. The paper points out the importance of sharing imported books and discusses how to realize resources sharing. 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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用户自我服务模式对图书馆信息服务工作的影响 总被引：9，自引：1，他引：9
This article first analyzes the environment in which the user self-service mode can be implemented.Then it discusses the effect of user self-service mode on library information service and proposes some strategies for libraries to im-prove their work. 相似文献
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基于因特网的多媒体远程教学初探 总被引：1，自引：0，他引：1
The paper analyzes the characteristics of a multimedia teleteaching system based on the Internet. It points out how to construct this system, and compares the technologies of connecting it with web databases. 相似文献
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Content-based filtering can be deployed for personalised information dissemination on the web, but this is a possibility that has been largely ignored. Nowadays, there are no successful content-based filtering applications available online. Nootropia is an immune-inspired user profiling model for content-based filtering. It has the advantageous property to be able to represent a user’s multiple interests and adapt to a variety of changes in them. In this paper we describe our early efforts to develop real world personalisation services based on Nootropia. We present, the architecture, implementation, usage and evaluation of the personalised news and paper aggregator, which aggregates news and papers that are relevant to an individual’s interests. Our user study shows that Nootropia can effectively learn a user’s interests and identify relevant information. It also indicates that information filtering is a complicated task with many factors affecting its successful application in a real situation. 相似文献
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《Information processing & management》1999,35(3):381-400
The VISION (video indexing for searching over networks) digital video library system has been developed in our laboratory as a testbed for evaluating automatic and comprehensive mechanisms for video archive creation and content-based search, filtering and retrieval of video over local and wide area networks. In order to provide access to video footage within seconds of broadcast, we have developed a new pipelined digital video processing architecture which is capable of digitizing, processing, indexing and compressing video in real time on an inexpensive general purpose computer. These videos were automatically partitioned into short scenes using video, audio and closed-caption information. The resulting scenes are indexed based on their captions and stored in a multimedia database. A client-server-based graphical user interface was developed to enable users to remotely search this archive and view selected video segments over networks of different bandwidths. Additionally, VISION classifies the incoming videos with respect to a taxonomy of categories and will selectively send users videos which match their individual profiles. 相似文献
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[目的/意义]在社会化标注系统自组织运行的基础上，构建个性化信息推荐的多维度融合与优化模型，进而在大数据环境下，为用户提供精准的个性化信息推荐服务，从而进一步丰富个性化信息推荐的理论体系以及拓展个性化信息推荐的研究方法。[方法/过程]首先，对每一种个性化信息推荐方法的优点和不足进行深入分析；然后，将基于图论（社会网络关系）、基于协同过滤以及基于内容（主题）3种个性化信息推荐方法进行多维度深度融合，构建个性化信息推荐多维度融合模型；最后，对社会化标注系统中个性化信息推荐多维度融合模型进行优化，从而解决个性化推荐过程中用户"冷启动"、数据稀疏性和用户偏好漂移等问题。[结果/结论]通过综合考虑现有的基于图论（社会网络关系）、基于协同过滤以及基于内容（主题）的个性化信息推荐方法各自的贡献和不足，实现3种方法之间的多维度深度融合，并结合心理认知、用户情境以及时间、空间等优化因素，最终构建出社会化标注系统中个性化信息推荐多维度融合与优化模型。 相似文献
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Awareness of another’s activity is an important aspect of facilitating collaboration between users, enabling an “understanding of the activities of others” (Dourish & Bellotti, 1992). In this paper we investigate the role of awareness and its effect on search performance and behaviour in collaborative multimedia retrieval. We focus on the scenario where two users are searching at the same time on the same task, and via an interface, can see the activity of the other user. The main research question asks: does awareness of another searcher aid a user when carrying out a multimedia search session?To encourage awareness, an experimental study was designed where two users were asked to compete to find as many relevant video shots as possible under different awareness conditions. These were individual search (no awareness), Mutual awareness (where both users could see the other’s search screen), and unbalanced awareness (where one user is able to see the other’s screen, but not vice-versa). Twelve pairs of users were recruited, and the four worst performing TRECVID 2006 search topics were used as search tasks, under four different awareness conditions. We present the results of this study, followed by a discussion of the implications for multimedia information retrieval systems. 相似文献
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基于知识检索机制的网络出版模式 总被引：1，自引：0，他引：1
网络出版活动的高效开展要求传统出版商由单纯的内容提供者向知识服务者过渡,同时自身存在对网络信息资源的内在性检索需求和搜集渴望,在当前智能检索技术不太成熟,而网络出版商整体信息素质水平不高,检索能力欠缺的背景条件下,运用知识检索来给网络出版提供保障无疑是一种理想选择.本文通过对知识检索概念和特征的简要介绍,分析了网络出版在知识检索技术影响下的发展现状及其前景,并进一步提出基于知识检索机制的网络出版模式创新思路. 相似文献
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个性化网络信息智能检索系统设计 总被引：3，自引：0，他引：3
本文结合现有的智能技术，提出了一个个性化网络信息智能检索模型。该模型能够对用户行为进行学习，从而建立一个反应用户兴趣的用户模型。而针对网络分布式的特点建立的检索代理模型，则能够通过对大量用户数据的分析积累丰富的知识。通过用户模型与检索代理模型的交互过程，向用户提供满意的检索结果。 相似文献