共查询到19条相似文献，搜索用时 171 毫秒
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网络环境下图书馆员个人门户构建研究 总被引：1，自引：0，他引：1
网络环境下信息过载成为现实,个人门户则是应对信息过载的有效工具。文章首先就个人门户的概念,以及什么是图书馆员个人门户做了扼要的介绍。接着重点从四个方面具体论述了图书馆员如何去构建自己的个人门户。最后针对图书馆员个人门户构建过程存在的问题阐述了解决对策。 相似文献
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面向知识服务的大学图书馆学科知识门户构建研究 总被引：1，自引：0，他引：1
论述了学科知识门户的特点和构建大学图书馆学科知识门户的意义。通过构建学科知识门户框架,从知识用户系统、知识门户服务、知识门户维护等方面,阐述了以学科为切入点的大学图书馆知识门户服务体系内容。 相似文献
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数字图书馆门户可用性评估指标体系 总被引：6，自引：0，他引：6
文章分析了数字图书馆门户及可用性的含义,在此基础上,从有效性、效率和用户满意度三个方面构建了一个数字图书馆门户可用性评估指标体系。 相似文献
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图书馆数字资源门户的构建 总被引：2，自引：0，他引：2
介绍数字资源门户的功能,认为图书馆数字资源门户的服务模式应按照用户搜索信息的思考习惯、行为模式设计,用户搜索数字资源的行为决定了图书馆的工作目标;构建数字资源门户需要数字资源标准化和接口通用化等技术方面的支持; 提出图书馆数字资源门户构建过程中面临的若干问题。 相似文献
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通过对国内科技文献共享平台门户系统建设现状的分析,指出在该类项目中构建通用门户的必要性。之后简要介绍通用门户产生的背景、基本概念和内容,对其中一个具有代表性的系统DNN进行详细分析,包括其基本模块和功能特色等方面的说明。最后通过湖北省科技丈献共享平台建设中的实践,具体阐述DNN在文献共享类项目的通用门户建设中的应用,从而为相关研究人员提供一些有益的借鉴。 相似文献
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学科信息门户的资源选择与组织 总被引：15，自引：0，他引：15
学科信息门户是整合某学科领域的资源、工具和服务,依托于因特网为用户提供信息检索和服务的网站系统。它是伴随着因特网的发展而发现的。本文借鉴国外一些学科信息门户的建设,就学科信息门户的资源选择标准和组织形式方面的问题加以讨论。 相似文献
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《Government Information Quarterly》2018,35(4):644-656
While most data originate within a local context, our knowledge about the realization of open government data (OGD) at local levels is limited due to the lack of systematic analysis of local OGD portals. Thus, we focus on a core question about analysing and guiding the development of local OGD portals. An evaluation framework is developed based on the comparison of related studies and principles. To fill the gap in existing frameworks which lack clarity in the prioritization process, Analytic Hierarchy Process together with an expert survey is used to derive priorities of elements of the framework. To test the capability of the framework in analysing and guiding the development of local OGD portals, a case study of Chinese province-level OGD portals has been carried out. Results show that data accessibility and quality matter more than data quantity for a local OGD portal. Currently, Chinese province-level OGD portals are in their infancy of development, with a great gap between Taiwan and Hong Kong with other portals. Data relating to local statistics, credit records, and budget and spending are well released on portals in China. Population size and the size and wealth of the local government show no significant relation with the number of datasets. By combining priorities of the framework with evaluation results, it could help local governments to recognise their present shortcomings and give them recommendations for recognizing directions for OGD portal's future development. 相似文献
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构建基于Ontology的知识门户 总被引：9，自引：1，他引：9
知识门户为用户提供了万维网上基于特定学科领域信息的视窗，方便用户查找相关的、特定学科的信息。智能存取系统（Intelligent Access）的构建与知识门户的信息供应需要进行大量的人工编辑和维护工作。为了减轻这些人工劳动，在构建与维护知识门户的综合方法中，可以利用Ontology作为概念的中枢提供和访问信息，并将信息结构化。 相似文献
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A General Evaluation Framework for Topical Crawlers 总被引：10，自引：0，他引：10
Topical crawlers are becoming important tools to support applications such as specialized Web portals, online searching, and competitive intelligence. As the Web mining field matures, the disparate crawling strategies proposed in the literature will have to be evaluated and compared on common tasks through well-defined performance measures. This paper presents a general framework to evaluate topical crawlers. We identify a class of tasks that model crawling applications of different nature and difficulty. We then introduce a set of performance measures for fair comparative evaluations of crawlers along several dimensions including generalized notions of precision, recall, and efficiency that are appropriate and practical for the Web. The framework relies on independent relevance judgements compiled by human editors and available from public directories. Two sources of evidence are proposed to assess crawled pages, capturing different relevance criteria. Finally we introduce a set of topic characterizations to analyze the variability in crawling effectiveness across topics. The proposed evaluation framework synthesizes a number of methodologies in the topical crawlers literature and many lessons learned from several studies conducted by our group. The general framework is described in detail and then illustrated in practice by a case study that evaluates four public crawling algorithms. We found that the proposed framework is effective at evaluating, comparing, differentiating and interpreting the performance of the four crawlers. For example, we found the IS crawler to be most sensitive to the popularity of topics.Partially supported by National Science Foundation CAREER grant No. IIS-0133124/0348940. 相似文献
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概念地图在知识表示与知识评价中的应用(Ⅱ)——概念地图作为知识评价的工具及其研究框架 总被引：3，自引：0，他引：3
概念地图构建方法关心概念选取、概念分类、中心概念定位、连接概念和交叉概念等几个主要问题。概念地图分析法集中在:分析概念地图组成成分,比较概念地图和基准概念地图的相似度,以及两者的综合。概念地图构建方法、分析方法、分析指标的信度和效度,三者密不可分,共同构成概念地图作为知识评价工具的研究框架。图2。表1。参考文献28。 相似文献
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从中外信息门户比较看CSDL学科信息门户的发展 总被引：3，自引：0，他引：3
从分类体系、索引数据量、建设单位、采用的元数据4个方面对国际上著名的RDN、BUBL和CSDL的五大学科信息门户进行比较分析;在此基础上,就我国CSDL学科信息门户的快速发展提出若干建议,包括做好资源的选择、完善元数据的使用、减少死链接现象、加强MyLibrary建设、加快数据加工速度等。 相似文献
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Scholars and practitioners argue that the most important interactions between citizens and government happen at the local level. These relationships could become closer and more frequent with the use of information and communication technologies (ICTs). In fact, portals could be seen not only as channels for providing government information and services, but also as powerful tools to exchange information and knowledge between different social actors and government entities and to enable participation in collective decision-making efforts about important public affairs. For instance, social media and other Web 2.0 tools could provide new electronic channels for these interactions through their inclusion in local government portals. This paper argues that although important modifications to the organizational and institutional frameworks would be necessary, the potential for local electronic governance through networks of government and non-government actors via internet portals is clearly present. However, a very important first step would be the inclusion of more interaction, participation, and collaboration mechanisms in government portals. Similar to previous efforts with data from the U.S., this paper describes the results of a recent assessment of local government portals in Mexico. The conclusion is that progress toward citizen engagement is slow in local governments and there are very few efforts to increase interaction, participation, and collaboration channels on their portals. Most of them are still following the vision of information and services providers and a local electronic governance model is still in its very initial stages. It seems that e-government in municipalities is still more rhetoric and less reality, at least in some countries. 相似文献
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学科信息门户及其优化途径 总被引：5，自引：0，他引：5
我国学科信息门户建设起步于21世纪初,至今已形成规模并取得了一些进展。与国外相比,我国的学科信息门户建设还普遍存在着资源不足、组织体系不规范、法律法规不完善、利用率低等缺陷。学科信息门户的优化途径有:大力推进学科信息门户的合作化建设;整合资源与建立更新维护机制;推行服务的个性化和人性化;实行规范化和标准化;用户的充分参与。要充分发挥图书馆在信息组织上的优势,让国内的图书情报机构共同加入到学科信息门户的建设中来。 相似文献