2001年《情报科学》载文、作者及引文的统计分析   总被引：7，自引：3，他引：7  

吕福谦 《情报科学》2003,21(11):1173-1175

本文运用文献计量学的方法，对2001年出版的《情报科学》载文、作者及引文的统计分析，阐述了该刊载文特点、作者及引文特点。  相似文献   

A citation-based document retrieval system for finding research expertise     

Quan Thanh Tho  S.C. Hui  A.C.M. Fong 《Information processing & management》2007

Current citation-based document retrieval systems generally offer only limited search facilities, such as author search. In order to facilitate more advanced search functions, we have developed a significantly improved system that employs two novel techniques: Context-based Cluster Analysis (CCA) and Context-based Ontology Generation frAmework (COGA). CCA aims to extract relevant information from clusters originally obtained from disparate clustering methods by building relationships between them. The built relationships are then represented as formal context using the Formal Concept Analysis (FCA) technique. COGA aims to generate ontology from clusters relationship built by CCA. By combining these two techniques, we are able to perform ontology learning from a citation database using clustering results. We have implemented the improved system and have demonstrated its use for finding research domain expertise. We have also conducted performance evaluation on the system and the results are encouraging.  相似文献   

A relevance feedback mechanism for cluster-based retrieval     

Niall Rooney  David Patterson  Mykola Galushka  Vladimir Dobrynin 《Information processing & management》2006

Contextual document clustering is a novel approach which uses information theoretic measures to cluster semantically related documents bound together by an implicit set of concepts or themes of narrow specificity. It facilitates cluster-based retrieval by assessing the similarity between a query and the cluster themes’ probability distribution. In this paper, we assess a relevance feedback mechanism, based on query refinement, that modifies the query’s probability distribution using a small number of documents that have been judged relevant to the query. We demonstrate that by providing only one relevance judgment, a performance improvement of 33% was obtained.  相似文献   

信息素质教育的发展及优化策略   总被引：19，自引：0，他引：19  

魏浩  张文娟 《情报科学》2004,22(3):291-294,298

本文通过对国外信息素质教育现状及国内信息素质教育状况的分析，提出影响国内信息素质教育的瓶颈，进而提出我国信息素质教育发展的优化策略。  相似文献   

Incorporating blockchain technology in information systems research     

《International Journal of Information Management》2023

In this Editorial Note for the special issue on "Incorporating Blockchain Technology in Information Systems Research," we first focus on the need on conducting blockchain research in the information systems field. We briefly describe the nine outstanding articles that were selected for publication in this special issue. The editorial note ends with a research agenda for future scholars interesting in studying the blockchain phenomenon.  相似文献   

基于粒子群优化算法的中小企业竞争情报搜集系统模型     

王洪林  刘伟 《科技管理研究》2021,41(21):196-203

以粒子群优化算法为基本理论,结合我国中小企业目前对竞争情报的迫切需求和开展竞争情报工作的困难,利用跨学科分析法和仿真实验检验法,构建一个适用于中小企业的竞争情报"粒子搜索模型".该模型充分调用各粒子"经验"寻找全局最优解,用以为我国中小企业构建低成本、高收益、易组织管理的竞争情报搜集系统模型提供参考.  相似文献   

如何界定情报信息的寿命   总被引：1，自引：0，他引：1  

刘衍双  史蔷 《情报科学》2004,22(3):276-278

本文以传统情报文献信息与现代情报信息的特性差异为切入点，认真分析了情报文献信息内涵的变化与发展，比较与求证决定情报文献信息寿命的诸多要素，最终导出科学的情报信息寿命观，这对于正确指导现代网络环境下情报信息工作的实践具有重要意义。  相似文献   

信息技术对传统产业结构影响分析   总被引：6，自引：0，他引：6  

刘虹涛  靖继鹏 《情报科学》2002,20(3):333-336

信息技术由于其具有的广泛性和渗透性，在传统产业改造中，能加快传统产业的产品更新周期，提高资源利用效率，改变需求结构、产品结构，提高质量，降低成本，增进局部乃至整体企业、行业的经营整理效率，从而促进传统产业结构的改变。  相似文献   

Improvement of building field association term dictionary using passage retrieval     

Uddin Md.  Elmarhomy  Elsayed  Masao  Kazuhiro  Jun-ichi 《Information processing & management》2007,43(6):1793

Field Association (FA) terms are a limited set of discriminating terms that can specify document fields. Document fields can be decided efficiently if there are many relevant FA terms in that documents. An earlier approach built FA terms dictionary using a WWW search engine, but there were irrelevant selected FA terms in that dictionary because that approach extracted FA terms from the whole documents. This paper proposes a new approach for extracting FA terms using passage (portions of a document text) technique rather than extracting them from the whole documents. This approach extracts FA terms more accurately than the earlier approach. The proposed approach is evaluated for 38,372 articles from the large tagged corpus. According to experimental results, it turns out that by using the new approach about 24% more relevant FA terms are appending to the earlier FA term dictionary and around 32% irrelevant FA terms are deleted. Moreover, precision and recall are achieved 98% and 94% respectively using the new approach.  相似文献   

参考咨询服务在信息时代的拓展   总被引：13，自引：0，他引：13  

王玉波 《情报科学》2004,22(2):172-174

文章首先论述了信息时代参考咨询服务的发展走向，然后论述了面临新的环境，参考咨询服务必须拓展服务方式、服务内容。  相似文献