流媒体技术在高校图书馆中的应用研究

本文基于我国985高校图书馆流媒体应用调查,分析了流媒体服务的现状与不足,提出了流媒体技术对高校图书馆的意义,当前服务的不足与展望,希望能促进我国高校流媒体服务的创新发展.     

竞争情报中人际网络构建的理论研究——基于社会网络的分析观点

在简述目前国内竞争情报科学理论中人际情报网络(HIN)研究的进展及存在问题的基础上，根据经济社会学的社会网络理论观点，结合竞争情报搜集和分析工作的特点，介绍三种不同的人际情报网络构建理论模型，并提出构建和完善企业竞争情报工作的人际情报网络可以采取联合、联结和嵌入三种策略。     

论大学生的诚信缺失与图书馆诚信教育功能

文章分析了大学生诚信缺失的原因，并就图书馆如何配合学校、社会对大学生做好诚信教育，提出了具体有效地解决措施。     

Analysis of the urban/rural broadband divide in Canada: Using GIS in planning terrestrial wireless deployment

Millions of Canadians residing in Canada's northern, isolated, rural, and remote communities do not have broadband Internet access. This situation has led to a national “broadband divide.” That is, the deployment of wireline broadband is very limited in Canada's northern, isolated, rural, and remote areas because of the significant expense of installation and maintenance of the wired infrastructure needed to reach dwellings in these locations.Terrestrial broadband wireless technology, on the other hand, does not entail the same kind of physical infrastructure. As a result, there are dramatic changes in how spatial considerations affect the provision of broadband Internet services (BIS) to areas beyond the urban zone. In particular, the spatial question is now focused on assessing the capacity for different technological solutions to reach profitable population bases, and brings to the forefront organizations that are developing non-line-of-sight (NLOS) technologies that would permit wireless Internet access over much greater distances than current solutions.We begin this paper by establishing the importance of broadband connectivity to Canada's northern, isolated, rural, and remote communities. This discussion comments on the role of the Government of Canada in the provision of broadband connectivity to residents of these communities, and outlines the current regulatory issues that govern wireless services and policy formulation.The second part of the paper illustrates the use of geographic information system (GIS) approaches in the study of wireless broadband planning and deployment. Case study findings suggest that GIS applications can make a significant contribution to the analysis of wireless deployment planning, to the understanding of the relationships between wireless signal sources and consumers, and to the spatial configuration of terrestrial wireless broadband networks. We conclude the paper by discussing how the GIS approach employed could be used to inform the public policy process with regard to increasing access to broadband Internet services in all regions of the country, and thereby providing the opportunity for all Canadians, regardless of location, to fully participate in the Information Society.     

Construction of query concepts based on feature clustering of documents

In Information Retrieval, since it is hard to identify users’ information needs, many approaches have been tried to solve this problem by expanding initial queries and reweighting the terms in the expanded queries using users’ relevance judgments. Although relevance feedback is most effective when relevance information about retrieved documents is provided by users, it is not always available. Another solution is to use correlated terms for query expansion. The main problem with this approach is how to construct the term-term correlations that can be used effectively to improve retrieval performance. In this study, we try to construct query concepts that denote users’ information needs from a document space, rather than to reformulate initial queries using the term correlations and/or users’ relevance feedback. To form query concepts, we extract features from each document, and then cluster the features into primitive concepts that are then used to form query concepts. Experiments are performed on the Associated Press (AP) dataset taken from the TREC collection. The experimental evaluation shows that our proposed framework called QCM (Query Concept Method) outperforms baseline probabilistic retrieval model on TREC retrieval.     

个性化推荐系统中的用户模型问题

个性化推荐系统已成为图书馆提供个性化服务的重要手段，而用户模型则是个性化推荐系统的基础和核心。然而基于关键词的用户模型已经不能够适应用户的个性化信息需求，本文提出了基于ontology的用户模型的设想。     

企业知识管理战略研究综述

在对1997-2004年国内外部分核心期刊上发表的知识管理战略研究论文及代表性的知识管理战略著作进行系统检索和分析研究的基础上,对国内外有关知识管理战略的理论基础、内涵、基本流派、管理过程等理论研究现状和知识管理战略在不同企业与行业中的应用研究现状进行综述;结合知识管理战略未来的研究热点,指出我国知识管理战略研究目前存在的问题。     

网站型实时解答知识库的制作和应用技巧

介绍了用FrontPage 制作实时解答知识库的理由；知识库的形式；网站型知识库的优点；制作方法；以及在实时解答服务实践中使用这种知识库的方法和技巧。     

Scale and Translation Invariant Collaborative Filtering Systems

Collaborative filtering systems are prediction algorithms over sparse data sets of user preferences. We modify a wide range of state-of-the-art collaborative filtering systems to make them scale and translation invariant and generally improve their accuracy without increasing their computational cost. Using the EachMovie and the Jester data sets, we show that learning-free constant time scale and translation invariant schemes outperforms other learning-free constant time schemes by at least 3% and perform as well as expensive memory-based schemes (within 4%). Over the Jester data set, we show that a scale and translation invariant Eigentaste algorithm outperforms Eigentaste 2.0 by 20%. These results suggest that scale and translation invariance is a desirable property.