共查询到20条相似文献，搜索用时 375 毫秒
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Based on the authors' experiences in practice, this paper deals with the technology and scheme of designing and realizing the experimental Internet-Based Information Retrieval Network System. It mainly discusses its general design scheme and access to the Internet. 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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检索语言在文献检索教学中的定位 总被引：2，自引：0，他引：2
Focused on the use of retrieval language in document retrieval teaching, this article discusses the influence of retrieval language on retrieval tool, retrieval mode and retrieval efficiency. It suggests that a retrieval language system be constructed and points out its proportion to document retrieval teaching. 相似文献
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论自然语言检索 总被引：8，自引：1，他引：8
With its advantages in information retrieval, such as simple in indexing and convenient in information re-trieval, natural language is now widely used in idonnafion retrieval and network retrieval. However, due to some charac-teristics of the natural language itself, its retrieval result is usually tmsafisfactory. This paper sumamrizes several main fac-tots that restrict natural language retrieval and introduces a concept space method to improve its retrieval efficiency. 相似文献
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建立光盘检索站——成人高校图书馆事业发展的需要 总被引：2，自引：0，他引：2
Beginning with an introduction to the advantages of CD-ROM technology, the superiorities of"CAJ-CD"in information field and its many kinds of special functions in service, and according to the present situation of adult colleges, this paper points out that building up the CD-ROM Retrieval Station is the ideal way to change the traditional libraries of adult colleges in China to modernized ones. 相似文献
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从信息资源的分类看搜索引擎的优化 总被引：1，自引：0，他引：1
The traditional infon-nation resources are classified according to scientificness and practicality. However,the classification of Internet information resources pays more attention to practicality while paying equal attention to scien-tificness. This article, starting from the classification methods of the traditional information resources and Intemet informs-lion resources, discusses how to optimize the search engines in classified catalogue retrieval and multiple keyword retrieval. 相似文献
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叙词表在网络环境下的新应用及对我国的启示 总被引：9，自引：1，他引：9
The article first gives a review of the latest development in the application of the thesauri in the network environment, then points out the problems which need extra attention in the development of Internet thesauri. It also ana-lyzes how China is developing Internet theasuri, and points out that if we can solve the problems of the electronic thesauri,they will play a more important role in information organization and retrieval. 相似文献
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中刊库检索效率及其影响因素比较分析 总被引：5，自引：0，他引：5
Based on the retrieval function of the Chinese Journal Database and the China Journal Net Bibliography and Abstract Database, the article analyzes the retrieval results of the two databases and their influence factors for the same retrieval missions. The article also discusses how to construct and evaluate a database. 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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信息产业的新视点——信息家电 总被引：1，自引：0，他引：1
Information household appliances have been the new focus of information industry, which comes with the "Venus'Plan. This article introduces the definition of information household appliances, and then their software and hardware technologies. Information household appliances will become the main products of information industry in the 21~(st) century, which will also promote the informatization process of the world. 相似文献
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首先论述搜索引擎的发展历史和发展现状,总结相关文献对搜索引擎发展趋势的研究成果。从搜索引擎的逻辑起点和基本假设这个全新的角度来看,目前搜索引擎使用效果不够理想的原因在于搜索引擎的设计理念深受传统文献检索思想的影响。满足用户的信息需求是搜索引擎的逻辑起点和最终归宿,最后结合网络用户信息需求的特点分析搜索引擎的发展趋势。 相似文献
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影响网络信息检索效率的用户因素 总被引：3，自引：0，他引：3
本文从3个层面探讨影响网络信息检索的用户因素,分别是用户的信息意识与信息能力层面,具体为信息需求和检索策略、计算机网络知识、对检索工具的熟悉程度、语言水平;用户的思维、情感状态因素层面,具体为思维定势、惰性思维和情感状态;用户的个体差异性层面,具体为性别、年龄、知识、经验. 相似文献
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Despite the common public use of Web search engines, their internal design details mostly remain as a black art. The speculation is that there is a significant knowledge gap between what is published by academia and what is guarded behind the doors of large-scale search companies. “Search Engines: Information Retrieval in Practice” is one of the few books that make an attempt to cover issues involved in search engine design and is probably the most comprehensive book published so far on this topic. Unfortunately, the book fails to be a complete search engine guide as its content is dominated by the topics from information retrieval, text processing, and statistics. More precisely, the focus of the book is biased towards the “search” rather than the “engines” as, in most places, discussions on effectiveness dominate those on efficiency by a great margin. However, the book stands as a very solid IR book. 相似文献
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Javier Parapar Alejandro Bellogín Pablo Castells Álvaro Barreiro 《Information processing & management》2013
Relevance-Based Language Models, commonly known as Relevance Models, are successful approaches to explicitly introduce the concept of relevance in the statistical Language Modelling framework of Information Retrieval. These models achieve state-of-the-art retrieval performance in the pseudo relevance feedback task. On the other hand, the field of recommender systems is a fertile research area where users are provided with personalised recommendations in several applications. In this paper, we propose an adaptation of the Relevance Modelling framework to effectively suggest recommendations to a user. We also propose a probabilistic clustering technique to perform the neighbour selection process as a way to achieve a better approximation of the set of relevant items in the pseudo relevance feedback process. These techniques, although well known in the Information Retrieval field, have not been applied yet to recommender systems, and, as the empirical evaluation results show, both proposals outperform individually several baseline methods. Furthermore, by combining both approaches even larger effectiveness improvements are achieved. 相似文献
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应用于信息检索的统计语言模型研究进展 总被引：1，自引：0，他引：1
统计语言模型作为一种自然语言处理的工具,已经被证明有能力处理大规模真实文本.而统计语言模型和IR相结合后所形成的SLM-IR模型的提出,是信息检索模型研究上的重大进展.本文介绍了统计语言模型在信息检索领域的基本模型及相关问题,重点分析了Lemur工具箱和标题语言模型的原理及模型,最后从整体上介绍了该领域的国际动态和研究进展情况. 相似文献
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科技查新预检索及医学实例分析 总被引：1，自引：1，他引：0
科技查新是我国科技创新服务工作的一个重要环节,科技查新预检索对作好科技查新工作至关重要。笔者探讨了科技查新预检索数据库选择、预检索方法、预检索结果处理等,并就两种主题概念检索方法(主题词检索和关键词检索)举例,进行比较分析。 相似文献