移动Agent电子商务信任协商机制的研究

分析了现有的电子商务模式及其存在的弊端，介绍了移动Agent技术及其在电子商务中的应用，并讨论了移动Agent的关键技术——信任协商机制，最后阐述了移动Agent电子商务信任协商系统的设计过程，并指出了其不足与需要改进的地方。     

A study of results overlap and uniqueness among major Web search engines

The performance and capabilities of Web search engines is an important and significant area of research. Millions of people world wide use Web search engines very day. This paper reports the results of a major study examining the overlap among results retrieved by multiple Web search engines for a large set of more than 10,000 queries. Previous smaller studies have discussed a lack of overlap in results returned by Web search engines for the same queries. The goal of the current study was to conduct a large-scale study to measure the overlap of search results on the first result page (both non-sponsored and sponsored) across the four most popular Web search engines, at specific points in time using a large number of queries. The Web search engines included in the study were MSN Search, Google, Yahoo! and Ask Jeeves. Our study then compares these results with the first page results retrieved for the same queries by the metasearch engine Dogpile.com. Two sets of randomly selected user-entered queries, one set was 10,316 queries and the other 12,570 queries, from Infospace’s Dogpile.com search engine (the first set was from Dogpile, the second was from across the Infospace Network of search properties were submitted to the four single Web search engines). Findings show that the percent of total results unique to only one of the four Web search engines was 84.9%, shared by two of the three Web search engines was 11.4%, shared by three of the Web search engines was 2.6%, and shared by all four Web search engines was 1.1%. This small degree of overlap shows the significant difference in the way major Web search engines retrieve and rank results in response to given queries. Results point to the value of metasearch engines in Web retrieval to overcome the biases of individual search engines.     

国内可视化搜索引擎研究进展:架构体系与关键技术

本文介绍了可视化搜索引擎内涵、核心内容和研究框架,并从架构体系、关键技术两方面阐述了国内可视化搜索引擎研究进展。     

基于情景化偏好的移动社交网络信息服务自适应建模研究

构建了移动社交网络基于情景化用户偏好的自适应适配信息服务系统模型,提出了移动社交网络的自适应服务发现方案。解决移动社交网络信息服务的发现与推送的延迟问题,实现高效的移动社交网络信息服务推送,对移动社交网络信息服务资源、知识资源进行科学管理。     

基于XML的公交查询系统设计

XML技术作为一门新兴技术,在许多领域都得到了广泛的支持并有着广阔的应用前景。作为数据表示的一个开放标准,XML语言给Web应用乃至网络计算注入了新的活力,其与HTML、SGML以及关系数据库之间的关系也是值得探讨的。本文通过＂基于XML的公交查询系统设计＂这样一个实例的制作来具体详细地阐述XML在Web上的广泛具体的应用。     

LET THE IGNORANT CONSUMER BEWARE: CONSUMER INFORMATION AND EFFICIENCY OF CONSUMER DECISION MAKING IN THE USA

Although many of the institutions which make up the modern economy pour out data which they hope will be used by consumers in their decision on what to consume, consumers still are regarded by some commentators as ‘ignorant’ when they make those decisions. Two main reasons are postulated, involving the cost of search and requirements for efficient data management. The policy implications are then assessed and the need for leadership in consumer information policy expressed. Finally, the way higher education can help fill the policy gap is briefly explored.     

移动数字图书馆现状及发展研究

从移动数字图书馆概念入手,分析数字图书馆开展移动服务的现状及不足,并对移动图书馆未来发展进行展望,认为随着移动数字图书馆的实现,将会对图书馆未来发展、信息公平问题、图书馆专业人才及人才培养、图书馆提升服务质量几个方面产生影响。     

图书馆移动服务模式优化研究——基于用户信息行为的视角

移动服务是图书馆知识服务体系的有机组成部分。本文对国内外图书馆移动服务模式研究现状进行了述评,指出目前国内图书馆移动服务模式存在着重实践、轻用户的现象。图书馆应以用户为中心来设计与优化移动服务模式。     

基于微信公众账号的图书馆移动信息服务研究

移动信息服务是图书馆开展信息服务的发展方向之一,微信作为一种新的即时通信产品,从开始就备受各界关注。首先分析了图书馆移动信息服务开展的现状,指出在开展移动信息服务中存在的问题;接着引入微信和微信公众账号,分析它们的特点和用户行为;总结了当前微信公众账号应用的常见模式;然后说明和分析构建基于微信公众账号的信息服务方式,提出符合图书馆行业特点的信息服务平台设想,分享了我校图书馆使用微信服务平台的经验;最后分析了微信的未来发展方向。     

智能搜索引擎与数字图书馆个性化服务

智能搜索引擎基于知识(概念)层面实行信息检索，以较强的自然语言理解和知识处理能力，表现出良好的个性化信息服务特色。因此，智能搜索引擎应用于数字图书馆个性化服务体系，不仅有效发挥前者数据挖掘、知识发现的功能，同时能较大地加深后者的主动性、智能性优势。