In search of query patterns: A case study of a university OPAC     

Eng Pwey LauAuthor Vitae  Dion Hoe-Lian Goh 《Information processing & management》2006

A transaction log analysis of the Nanyang Technological University (NTU) OPAC was conducted to identify query and search failure patterns with the goal of identifying areas of improvement for the system. One semester’s worth of OPAC transaction logs were obtained and from these, 641,991 queries were extracted and used for this work. Issues investigated included query length, frequency and type of search options and Boolean operators used as well as their relationships with search failure. Among other findings, results indicate that a majority of the queries were simple, with short query lengths and a low usage of Boolean operators. Failure analysis revealed that on average, users had an almost equal chance of obtaining no records or at least one record to a submitted query. We propose enhancements and suggest future areas of work to improve the users’ search experience with the NTU OPAC.  相似文献   

论我国信息立法     

胡北苑  张敏 《情报科学》2004,22(9):1066-1069

本文从信息人手，谈到信息法的定义、作用、三因素，并重点分析了我国信息立法领域的研究现状，以方便后来学者的使用。  相似文献   

网络时代高校图书馆重点学科文献信息资源的建设   总被引：13，自引：0，他引：13  

席会芬 《情报科学》2003,21(8):846-849

本文通过对网络环境下高校馆重点学科文献信息资源建设环境的分析，探讨了重点学科文献信息资源建设的保障及采取的策略。  相似文献   

Information security risk analysis model using fuzzy decision theory     

《International Journal of Information Management》2016,36(1):25-34

This paper proposes a risk analysis model for information security assessment, which identifies and evaluates the sequence of events – referred to as alternatives – in a potential accident scenario following the occurrence of an initiating event corresponding to abuses of Information Technology systems. In order to perform this evaluation, this work suggests the use of Event Tree Analysis combined with fuzzy decision theory. The contributions of the present proposal are: the development of a taxonomy of events and scenarios, the ranking of alternatives based on the criticality of the risk, considering financial losses, and finally, the provision of information regarding the causes of information system attacks of highest managerial relevance for organizations. We included an illustrative example regarding a data center aiming to illustrate the applicability of the proposed model. To assess its robustness, we analyzed twelve alternatives considering two different methods of setting probabilities of the occurrence of events. Results showed that deliberate external database services attack represent the most risky alternative.  相似文献   

关于网络信息技术伦理教育的一些思索     

李凯 《黑龙江科技信息》2007,(9S):169-169,170

网络信息技术推动了人类社会的发展，但同时了一系列诸如计算机黑客、计算机智能犯罪、个人隐私、计算机病毒、计算机的过分依赖等等暂时无法解决的，同时至关重要的社会问题。因此加强网络信息技术从业人员的道德修养至关重要。通过分析网络信息技术的独特性，提出必须加强网络信息技术伦理教育，指出社会需要网络信息技术伦理，并对网络信息技术伦理建设进行了探讨思索，希望能够为我国教育事业尽微薄之力。  相似文献   

基于资源共享的区域性电子政务系统的技术构建   总被引：1，自引：0，他引：1  

姜益民 《情报科学》2003,21(9):978-981

区域性电子政务的建设不仅是信息化发展的需要，而且是政府管理的重大变革，其中基于资源共享的区域性电子政务的技术构建是一个重要的现实问题。本文通过对实施的分析，讨论了网络—资源—软件支撑的整体开发模式，并从中引发出对一些基本问题的思考。  相似文献   

网上信息资源的组织方法与管理策略   总被引：26，自引：3，他引：26  

马明霞 《情报科学》2001,19(4):375-377,400

从网上信息资源组织的意义入手，分别阐述了网上信息组织的方法，原则与管理策略。  相似文献   

数字图书馆建设的版权问题   总被引：14，自引：0，他引：14  

吴永臻 《情报科学》2001,19(8):801-803,880

本文分析探讨了在数字图书馆建设中人们普遍关注的一些版权问题，特别强调指出了技术保护的重要性。  相似文献   

SDQE: towards automatic semantic query optimization in P2P systems     

Xing Zhu  Hualiang Cao  Yong Yu 《Information processing & management》2006

Conventional information retrieval technology (i.e. VSM) faces many difficulties when being implemented in complex P2P systems for the lack of global statistic information (e.g. IDF) and central services. In this paper, we suggest a novel query optimization scheme (Semantic Dual Query Expansion, SDQE) that makes full use of the context information supplied by the local document collection. Latent Semantic Indexing (LSI) is used to explore the local context information. By comparing the different local context information hidden in different document collections, it is possible to solve the synonymy–polysemy problem in VSM. The experiments prove that our scheme is effective to improve the retrieval performance in P2P systems without knowing the global statistic information.  相似文献   

信息检索可视化初探   总被引：7，自引：2，他引：7  

周宁  文燕平  严亚兰 《情报科学》2004,22(2):138-142

本文讨论了信息检索可视化的系统环境、体系结构和人机接口的设计方法。由于信息资源的类型(图、文、声)不同，其检索方法各具特色；其系统内由并列的模块支撑，而外部用统一的界面提供。  相似文献