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The article measures the social information in Beijing, Shanghai, Guangzhou and Shenzhen with statisti-cal data. It results in the indexes of social information in these 4 cities. Some suggestions on how to promote the development of social information level in these cities are also put forward. 相似文献
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Web2.0环境下信息服务的定位与重构 总被引：1，自引：0，他引：1
在探讨Web2.0服务理念对信息服务影响的基础上,指出Web2.0带来大变革：长尾理论、众包模式和云计算,强调以用户为中心和强化用户积极参与;提出Web2.0环境下的信息服务在功能上需重新定位：社会化和个性化服务;因此Web2.0环境下信息服务需从三个方面进行重构：信息资源建设、服务系统和服务业务组织。Abstract： Based on the discussion on the impact of Web2. 0 service concept on information service,this article points out the great changes brought about by Web2. 0： the long tail theory,the user-centred mode and cloud computer,emphasizing the centric position of users and strengthening their active participation. The article points out that the function of information service in the Web2. 0 environment should be re-orientated to social and personalized service. Therefore,the information service in the Web2. 0 environment should be reconstructed from 3 aspects： information resources construction,service system organization and service business organization. 相似文献
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知识经济和文献信息开发利用的机制分析 总被引：2，自引：0，他引：2
Documentary information is an important social resource in the information era, especially in the knowledge economy era. The development of knowledge economy not only raises new demands for documentary information, but also provides better opportunities to exploit and utilize documentary information. Based on this opinion, this article puts forward some suggestions for exploiting documentary information. 相似文献
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通过对我国权威政策法规数据库进行检索,对检索结果从发布时间、发布效力级别等处着手,对我国国家信息资源政策法规建设现状进行分析,思考我国现行信息资源政策法规存在的问题,为今后信息资源政策法规制定提供参考。Abstract： Based on the retrieval of the authorized policy and law databases in China,this article analyzes the status quo of the formulation of policies and laws for information resources in China from the issuing time and the grades of issuing efficacity. The article thinks about the problems in the current policies and laws for information resources in China in an attempt to provide reference for the formulation of policies and laws for information resources in future. 相似文献
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浅议信息管理职业及专业人才培养 总被引：2，自引：0，他引：2
The arriving of information society has made information management become a specialized social occupation. Information management discipline is just the cradle to train this kind of special talent. The paper explores how to comprehend and treat information management occupation and how to position our special education and talent training in accordance with social requirement for occupation. 相似文献
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信息伦理学研究中若干问题的思考 总被引：13，自引：0，他引：13
The further development of information ethics needs to solve some important ethic problems involved with disciplinary construction. These problems include the cause of the formation of information ethics; the research method,attribution and features of information ethics; the connotation and systematic structure of information ethics; the enlightenment we gain from the studies of the guiding principles of information ethics in foreign countries. The scientific analysis and exposition of these problems are helpful to the prosperity and perfection of information ethics and to the construction of social information ethics. 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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大众传播信息合理使用原则分析 总被引：1，自引：0，他引：1
The principle of the rational use of the copyright of mass communication is an importamt legal system to protect the right of the social public and individuals to use information. However, this system is facing severe challenges both in technology and in benefit. This paper attempts to analyzes the problems in the principle of rational use, such as the principle of judgement, abuse restriction and the principle of rational use under the network communication conditions. 相似文献
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针对个性化信息服务能力评价中的不确定性问题,基于证据理论建立了个性化信息服务能力评价指标体系和个性化信息服务能力评价模型,并给出了具体算法,通过实证分析计算,不仅验证了该方法能较好地解决评价过程中所遇到的不确定性问题,也证明了该方法的有效性和可行性。Abstract： In view of the uncertainty problems in personalized information service capability evaluation,this article develops a personalized information service capability evaluation indicator system and a personalized information service capability evaluation model based on theory of evidence. The article gives the concrete algorithm. The empirical analysis and calculation show that this method can not only resolve the uncertainty problems in the evaluation process,but also testify the effectiveness and feasibility of the method. 相似文献
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社会性标记是集合众人对网络资源进行标记、以词分类的新兴信息组织方式。这种自由标记与传统以专家为基础的图书信息组织方式不同。本文探讨社会性标记的意义、类型与特征,同时以最具代表性之一的社会性书签网站Delicious为例,简介这类系统所提供的功能。此外,也尝试对社会性标记与图书信息组织特征做比较,进一步了解社会性标记的价值及在图书信息服务中的应用范畴。 相似文献
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Participation in and adding content to social tagging tools is important for these tools to achieve their purpose of classifying and organizing information. Users of social tagging tools are driven to participate and add tags by extrinsic and intrinsic motivation. Extrinsic motivation is dominating research as a main predictor of why users use information systems. Social tagging tools, as a subset of social media tools, are distinguished by their unique social aspect that makes intrinsic motivation a potential driver for users to add tags to content. Intrinsic motivation, when applied to social tagging tools, could entail many shades that represent different users’ motives for using such tools. In this paper, we add a rich concept of intrinsic motivation to include hedonism as a main predictor of users’ behavior on social tagging tools. We empirically validate a previously proposed theoretical model of three dimensional concepts of hedonism with three components describing individuals’ hedonic state when interacting with social tagging tools: explorability, curiosity, and enjoyment. After a robust and thorough data analysis using structured equation modeling, the results confirm our theoretical model and suggest using a richer concept of enjoyment to reflect a hedonic dimension when investigating intrinsic motivation with interactive social media tools. Our validated model could be the spark of new factors that have the potential to influence user acceptance of information systems in general and in social media tools. This research contributes to the development of attitude-behavior theories that could explain users’ acceptance of dynamic web 相似文献
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本文利用SOM神经网络的自组织特征,对delicious网站的典型标签族进行分类,从而识别社会化标注系统中标签的语义维度,为信息用户对标签的使用提供语义方面的参考。 相似文献
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针对现有的标签推荐方法存在的推荐准确率不高与效果不理想等问题,本文提出了基于LDA主题模型的社会化标签推荐方法。该方法利用LDA主题建模技术将传统的基于对象间关系的推荐方法扩展到融合对象间关系与资源内容特征的统一推荐。实验结果表明,该方法取得了理想的预期效果,能够显著提高标签推荐的质量与效果。 相似文献
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[目的/意义]在社会化标注系统自组织运行的基础上，构建个性化信息推荐的多维度融合与优化模型，进而在大数据环境下，为用户提供精准的个性化信息推荐服务，从而进一步丰富个性化信息推荐的理论体系以及拓展个性化信息推荐的研究方法。[方法/过程]首先，对每一种个性化信息推荐方法的优点和不足进行深入分析；然后，将基于图论（社会网络关系）、基于协同过滤以及基于内容（主题）3种个性化信息推荐方法进行多维度深度融合，构建个性化信息推荐多维度融合模型；最后，对社会化标注系统中个性化信息推荐多维度融合模型进行优化，从而解决个性化推荐过程中用户"冷启动"、数据稀疏性和用户偏好漂移等问题。[结果/结论]通过综合考虑现有的基于图论（社会网络关系）、基于协同过滤以及基于内容（主题）的个性化信息推荐方法各自的贡献和不足，实现3种方法之间的多维度深度融合，并结合心理认知、用户情境以及时间、空间等优化因素，最终构建出社会化标注系统中个性化信息推荐多维度融合与优化模型。 相似文献
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基于社会标签的推荐系统研究 总被引：1，自引：0，他引：1
社会标签是一种新颖的大众索引方法,在Web 2.0时代各种收藏、检索、共享网站中得到广泛的应用,个性化推荐系统是基于用户的偏好为用户提供个性化信息服务的重要技术。本文针对推荐技术如何与社会标签结合的问题,分析了最新的研究现状和应用。详细阐述了3个方面的研究进展:标签推荐系统的研究、基于社会标签的个性化推荐系统的研究、社会标签的推荐应用系统。 相似文献
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Social tagging systems enable users to assign arbitrary tags to various digital resources. However, they face vague-meaning problems when users retrieve or present resources with the keyword-based tags. In order to solve these problems, this study takes advantage of Semantic Web technology and the topological characteristics of knowledge maps to develop a system that comprises a semantic tagging mechanism and triple-pattern and visual searching mechanisms. A field experiment was conducted to evaluate the effectiveness and user acceptance of these mechanisms in a knowledge sharing context. The results show that the semantic social tagging system is more effective than a keyword-based system. The visualized knowledge map helps users capture an overview of the knowledge domain, reduce cognitive effort for the search, and obtain more enjoyment. Traditional keyword tagging with a keyword search still has the advantage of ease of use and the users had higher intention to use it. This study also proposes directions for future development of semantic social tagging systems. 相似文献
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在对Web—Gis技术进行研究的基础上,采用Openlayers技术实现离线瓦片数据的读取和显示,在地图之上叠加图层。在上层图层上显示航班信息。该系统比较直观地显示了进出银川机场的所有航班信息,未落地的飞机都会处在飞行状态。该系统完全可以模拟航班实时动态信息,为机场地勤人员提供非常有价值的信息。 相似文献
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【目的/意义】以主题聚类的方法揭示国内图情领域区块链研究热点,为区块链在图情领域的研究工作提供
参考。【方法/过程】利用中国知网数据库检索区块链在图情领域应用的全部期刊论文、会议论文与学位论文,提取
了470个关键词,并利用杰卡德系数计算文献的相似程度,形成10个主题聚类,之后利用IG（信息增益法）计算所有
关键词在主题聚类中的重要程度,通过前10位核心关键词阐述各主题聚类中研究论文的主要研究内容,并通过主
题聚类下的年度发文趋势分析区块链在图情领域未来的发展趋势。【结果/结论】文章共提取出区块链技术、智慧图
书馆、资源建设、信息服务、阅读推广、隐私保护、借阅服务、科学数据、版权保护、情报分析十大主题聚类,并将其归
纳出包含基础层、技术层、应用层、拓展层的研究框架,分析了未来研究趋势将更加集中于情报分析、智慧图书馆、
阅读推广、科学数据、版权保护、隐私保护六大主题中。【创新/局限】对研究主题的分析还可以采用更多的视角进行
分析,如知识图谱等。 相似文献
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《Information processing & management》2019,56(3):939-954
Recently, the high popularity of social networks accelerates the development of item recommendation. Integrating the influence diffusion of social networks in recommendation systems is a challenging task since topic distribution over users and items is latent and user topic interest may change over time. In this paper, we propose a dynamic generative model for item recommendation which captures the potential influence logs based on the community-level topic influence diffusion to infer the latent topic distribution over users and items. Our model enables tracking the time-varying distributions of topic interest and topic popularity over communities in social networks. A collapsed Gibbs sampling algorithm is proposed to train the model, and an improved diversification algorithm is proposed to obtain item diversified recommendation list. Extensive experiments are conducted to evaluate the effectiveness and efficiency of our method. The results validate our approach and show the superiority of our method compared with state-of-the-art diversified recommendation methods. 相似文献