共查询到19条相似文献，搜索用时 421 毫秒
1.
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
2.
用户情报检索机制的历时性分析研究 总被引：5，自引：0，他引：5
The paper analyzes the information retrieval mechanism with diachrony method, divides information retrieval process into four circumstances, that is, information need, infomnation want, information demand and retrieval, and information assimilation and use, and based on Brooks Equation, goes further into details of information retrieval mechanism. 相似文献
3.
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
5.
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
6.
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
7.
《中国科学院院刊(英文版)》2005,19(2):125-126
The Tibetan Plateau (Qinghai-Xizang Plateau)is a unique geological-geographical unit on Earth, an ideal region for studies into the formation and evolution of the lithosphere and the dynamic mechanism of the earth crust. The uplifting of the Plateau exerts profound influence upon the evolution and differentiation of the natural environment of the plateau itself, its adjacent regions and the Northern Hemisphere. As a unique natural geographical unit, the Plateau holds a special status in the whole globe due to its special natural environment and ecosystems, which is also in close relation to global environmental change.The significance of the Plateau research should be recognized not only in the fundamental research fields of geo-sciences and biology, but also in its application to resource exploitation, environmental protection and sustainable development of the Plateau region. 相似文献
8.
网络信息检索技术的智能化趋势 总被引：19，自引：0，他引：19
Beginning with an analysis of the present situation of network information retrieval techniques, this article points out the main problems existent therein. It also probes into the prospects of applying the theory and technique of artificial intelligence to network information retrieval techniques as well as its intelligence trend. 相似文献
9.
期刊论文辅文信息及其情报价值 总被引：2，自引：0，他引：2
The article expatiates on the supplementary literature, analyzes its value in documentary information trans-mission, communication, indexing and bibliometrics, and suggests that the authors and editors should pay attention to regularized delivering and editing the supplementary literature. 相似文献
10.
国有企业信息资源网的建设 总被引：4，自引：0，他引：4
An effective approach to informatize the state-owned enterprise is to build the enterprise information resources network. This paper puts forward a DB-ODS-DW information model for the construction of enterprise information resources network and discusses how to solve the problems in its construction. 相似文献
11.
自然语言在Pubmed检索系统中的应用 总被引：4，自引：0，他引：4
自然语言检索是情报检索的发展趋势。Pubmed检索系统通过自然语言自动转换及截词检索、词组的自动识别及特定符号的使用、限定检索范围、Preview/Index等功能，有效地克服了自然语言检索的局限，提高了检索效率。 相似文献
12.
网络环境下人工语言与自然语言的融合研究 总被引：3，自引：0，他引：3
本文首先指出在网络环境下对人工语言与自然语言融合的研究是情报检索语言研究的主要内容 ,通过人工语言与自然语言在情报检索中的发展与运用的分析比较 ,明确了两者在情报信息的标引与检索中各有利弊 ,指出网络环境下人工语言与自然语言融合———优势互补的可行性、必然性与必要性。最后论述了如何实现网络环境下自然语言与人工语言融合。 相似文献
13.
智能情报检索与NLP 总被引：5，自引：1，他引：5
本文论述了智能情报检索、自然语言的内涵、特点，分析了国内外智能情报检索的研究状况，针对智能情报检索系统中自然语言的标引和检索及建立未来更为便捷的智能情报检索系统提出几点建议。 相似文献
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15.
信息检索发展中的一个重要理论问题是如何对查询与文档进行匹配,由此形成了不同的信息检索模型。跨语言信息检索是信息检索研究的一个分支,也是近年来的热点问题。本文主要对信息检索模型的研究进展,及其在跨语言信息检索中的应用进展进行分析与综述。 相似文献
16.
自然语言处理技术在中文全文检索中的应用 总被引：1，自引：0，他引：1
自然语言处理技术是中文全文检索的基础.首先介绍了全文检索技术及自然语言处理技术,接着详细地阐述了自然语言处理技术在中文全文检索中的应用,并对目前基于自然语言处理技术的中文全文检索技术的局限性进行了分析,探讨了中文全文检索技术的未来发展方向. 相似文献
17.
利用分类法和主题法改善搜索引擎的性能 总被引：6，自引：0，他引：6
本文对Internet上的检索工具搜索引擎的工作机理和性能进行了全方位的探讨，指出了常见搜索引擎信息检索缺点。同时还指出了Meta搜索引擎、智能搜索引擎和代理搜索引擎虽然提高了网络信息检索的质量，但由于分类体系不统一，类目划分标准模糊，因而仍然未能从根本上改变搜索引擎主要以关键词（自然语言）作为检索入口的现状，不能实现分类检索与主题检索的一体化。要实现搜索引擎信息检索的突破，笔者认为有必要运用情报检索语言的理论和方法来完善因特网搜索引擎的性能，实现分类、主题一体化的检索机制，克服分类检索语言单纯以学科聚类、主题语言单纯以事物聚类的局限性。 相似文献
18.
采用4种检索方式（无过滤布尔逻辑、过滤布尔逻辑、无过滤自然语言和过滤自然语言）对7个常见数据库ASP、GS、JSTOR、LexisNexis、ProQuest Central、PubMed、Scopus和Web of Science检索测试,最后分析了在目前技术环境下,布尔逻辑和自然语言检索相比,哪种方式更加有效。 相似文献
19.
In Mongolian, two different alphabets are used, Cyrillic and Mongolian. In this paper, we focus solely on the Mongolian language using the Cyrillic alphabet, in which a content word can be inflected when concatenated with one or more suffixes. Identifying the original form of content words is crucial for natural language processing and information retrieval. We propose a lemmatization method for Mongolian. The advantage of our lemmatization method is that it does not rely on noun dictionaries, enabling us to lemmatize out-of-dictionary words. We also apply our method to indexing for information retrieval. We use newspaper articles and technical abstracts in experiments that show the effectiveness of our method. Our research is the first significant exploration of the effectiveness of lemmatization for information retrieval in Mongolian. 相似文献