国内外电子资源研究进展及趋势分析——基于Web of Science与CJFD的定量分析

通过对Web of Science的三大引文索引SCI、SSCI和A﹠HI与《中国期刊全文数据库》(CJFD)中核心期刊电子资源研究文献收录情况进行对比分析,应用文献计量学方法分析其年代分布、学科类别、来源期刊、国家与地区、语种、研究机构等情况,综合评述国内外电子资源研究的发展情况及热点趋势,同时针对我国电子资源建设与管理现阶段存在问题,为其未来发展研究提出意见和建议。     

混合模式下的主题自定信息收集系统

又快又好地准备好数据是系统发挥好功能的关键。本文开发了一个具有C/S、B/S、及Web Ser-vice模式和具有SQL Server、Access数据库的信息收集系统。信息的主题是自定的。并详细讨论该系统的设计及核心功能的实现方案。     

Disambiguated query suggestions and personalized content-similarity and novelty ranking of clustered results to optimize web searches

In this paper, we face the so called “ranked list problem” of Web searches, that occurs when users submit short requests to search engines. Generally, as a consequence of terms’ ambiguity and polysemy, users engage long cycles of query reformulation in an attempt to capture relevant information in the top ranked results.     

User k-anonymity for privacy preserving data mining of query logs

The anonymization of query logs is an important process that needs to be performed prior to the publication of such sensitive data. This ensures the anonymity of the users in the logs, a problem that has been already found in released logs from well known companies. This paper presents the anonymization of query logs using microaggregation. Our proposal ensures the k-anonymity of the users in the query log, while preserving its utility. We provide the evaluation of our proposal in real query logs, showing the privacy and utility achieved, as well as providing estimations for the use of such data in data mining processes based on clustering.     

The distribution of Web citations

A substantial amount of research has focused on the persistence or availability of Web citations. The present study analyzes Web citation distributions. Web citations are defined as the mentions of the URLs of Web pages (Web resources) as references in academic papers. The present paper primarily focuses on the analysis of the URLs of Web citations and uses three sets of data, namely, Set 1 from the Humanities and Social Science Index in China (CSSCI, 1998–2009), Set 2 from the publications of two international computer science societies, Communications of the ACM and IEEE Computer (1995–1999), and Set 3 from the medical science database, MEDLINE, of the National Library of Medicine (1994–2006). Web citation distributions are investigated based on Web site types, Web page types, URL frequencies, URL depths, URL lengths, and year of article publication. Results show significant differences in the Web citation distributions among the three data sets. However, when the URLs of Web citations with the same hostnames are aggregated, the distributions in the three data sets are consistent with the power law (the Lotka function).     

Examining online consumers’ behavior: A service-oriented view

Retailers’ websites are an important interface between retailers and their customers. The various features and elements that retailers include on their websites play a critical role in attracting customers and ensuring their satisfaction with the online shopping process. By conducting a three-phased study, we identify how the elements of a website shape customers’ salient beliefs. These salient beliefs, in turn, determine the level of customers’ satisfaction with the website. This study provides both theoretical insights into the beliefs of online shoppers and practical insights for retail website operators. Specifically, we argue that when retail websites are constructed to include several specific elements that appeal to the key salient beliefs of information quality, service quality, and system quality, retailers will increase customers’ satisfaction with the online shopping process.     

基于Web评论挖掘的动态竞争情报分析研究(下)——算法设计与实验分析

针对当前竞争情报分析算法无法有效地处理结构类型多样的Web评论信息,研究并设计了基于Web评论挖掘的动态竞争情报分析算法进行语义层面的情报分析,获取深层次的动态竞争情报。该算法主要由评论内容识别与抽取、语义关联挖掘、文本语义极性分析3个部分组成。实验结果表明,该算法能够显著地提高情报分析的准确率和效率,实现深层次的评论挖掘和情报知识发现。     

WESTLAW and LEXIS

No abstract available for this article.     

Deep Web信息抽取研究

针对Deep Web信息资源的利用问题，指出对其进行信息抽取的意义，分析对比在信息抽取过程中处理查询接口和抽取结构化数据这两个主要步骤所使用的技术，采用基于关键词查询和建立文档对象模型的方法对专利数据库进行抽取实验。通过分析实验结果，验证抽取方法的准确性，指出不足之处和解决的途径，以期达到充分利用Deep Web信息资源的目的。     

Web2.0对网络信息交流的影响

介绍Web2.0的定义以及相关技术,指出Web2.0在信息交流方面有三大革新：将六度空间理论和长尾理论应用于信息交流,以微内容为信息交流的基础。通过对传统信息交流理论,交流体系,交流效果,交流控制影响的分析,展现Web2.0带来的极大变革。认为Web2.0时代网络信息交流有三个发展方向：交流方法一体化,网络服务更加细化和大量微中心变为中心。提出基于Web2.0环境下的信息交流模型并对其进行分析。