Web使用挖掘下的Web页面层次分类技术研究

Web使用挖掘研究用户访问行为所体现的行为特征,Web站点结构分析对于Web使用挖掘具有重要意义.本文讨论如何结合Web站点内页面间的超链结构和关键页面分析技术实现对Web站点的链接结构分析,得到清晰的站点拓扑结构和页面层次分类,进而以此为Web页面进行层次编码,和Web用户行为向量的建立方法,为准确表述用户的访问行为提供数据支持;用一种新的方式进一步有效的挖掘用户的行为特征.最后,把它同一些重要的页面分类方法,从算法的计算效率和页面分类的准确率上进行了比较,试验数据的分析表明,该方法在效率和准确率上有一定提高.     

基于点击流的电商用户会话建模

[目的/意义] 鉴于已有基于点击流的用户模型大多简单地采用页面类型序列代替行为序列,提出一种根据点击流访问页面序列到用户行为的映射方案,解决用户行为建模的问题。[方法/过程] 本文在分析网页URL参数、页面内容等特征的基础上,以81 759个电商用户会话为测试样本,提出并实现从页面到用户行为的映射方法,给出一种依据原始日志建立用户行为序列来描述会话的方案。[结果/结论] 分析反映出在会话层面上已有研究不易得到的行为特征,得到6类具备不同行为模式的会话:功能探索会话、卖家管理会话、营销推动会话、资料管理会话、商品浏览会话、检索依赖会话。基于点击流对用户会话建模,可以得出用户会话中行为序列特征,对实现准确营销与推荐具有重要价值。     

基于用户信息检索相关性反馈模型的研究

提出通过获取用户建立和更新信息相关反馈模型的思想.通过观察用户在浏览Web页面时所采取的动作来获取的反馈信息,利用检索算法将用户信息量化,并利用这些信息建立与更新用户模型.一方面用户对检索结果的评价输入到用户模型上,另一方面,检索系统通过机器学习跟踪用户信息并优化用户模型.     

高校图书馆网页访问权限的设置

图书馆网页设计中经常面临某一页面只让某一用户浏览、某一页面只让某些用户浏览和某些页面只让某些用户浏览问题。通过ASP网页设计，介绍几种限制用户访问权限的方法。     

学科信息门户人性化服务之探讨

学科信息门户人性化服务理念就是尊重用户,以提供优质的信息为前提,并充分考虑用户在使用过程中的真实感受。本文介绍了学科信息门户的概念和特点,论述了学科信息门户实现人性化服务的必要性,然后从门户宣传、页面设计、交互性平台建立和门户收费等四个方面阐述学科信息门户实现人性化服务的对策。     

所见、所感与所知：用户的注意力、主观感受和在线健康信息质量评价关系探究

健康网站是用户获取健康信息的重要来源,在线健康信息的质量关系到患者、医生、网站运营商等所有相关者的利益。网站页面元素是在线健康信息的载体,用户对信息质量的评价依赖于对页面元素的感知。本研究基于在线健康信息质量评价原则划分页面元素,采集和分析相关页面元素上的注意力分配;利用调查问卷收集质量评价数据,分析质量评价与页面元素注意力分配的相关性;通过凝视提示回顾式发声思考和半结构化访谈获取用户的主观感受,以解释质量评价与页面元素注意力分配之间的关系。研究结果发现,相比于其他页面元素,用户在医生认证资质和广告上的注意力分配较多;用户对健康信息权威性、保密性、公开性和广告政策的评价分别与相应页面元素的注视次数和注视时间正相关,对补充性和归因性的评价分别与相应页面元素的注视次数和注视时间负相关,而对合理性和透明性的评价与相应页面元素的注视次数和注视时间不相关;最后,从用户主观感受的角度揭示了注意力分配和质量评价产生关系的内在原因。本研究丰富了在线健康信息质量评价理论基础和研究方法,研究结论为改善在线健康信息内容质量和健康网站界面设计提供了参考。     

PageRank技术分析及网页重要性的综合评价模型

分析了搜索引擎Google的PageRank技术及其存在的不足，并结合搜索引擎的第一定律和用户对页面的超文本链的点击率判断网页重要性的方法，建立了网页重要性的综合评价模型。     

基于Web日志和缓存数据挖掘的个性化推荐系统

针对当前推荐系统中存在的问题,提出一个基于Web日志和缓存数据挖掘的个性化推荐系统.系统依据Web日志挖掘用户兴趣页面时综合考虑了访问次数、浏览时间和页面长度.通过对Web日志和缓存数据挖掘得到的兴趣页面的有效分类,构造不同用户的兴趣模型.系统能依据用户兴趣模型实现内容过滤推荐,同时也能通过比较不同用户的兴趣模型实现协作过滤推荐.经模拟实验测试表明,本文提出的推荐方法是可行并且有效的.     

基于序列模式的个性化Web页面推荐模型*

基于数据挖掘中的序列模式方法,提出一种个性化Web页面推荐模型。该模型首先利用Web使用数据预处理提取Web交易事务集,然后应用序列模式算法挖掘频繁（连续）序列,最后通过构建频繁（连续）序列树生成用户偏好视图以生成个性化Web页面推荐集。     

企业知识发现中的个性化Web推荐服务研究

本文主要论述企业知识发现中基于个性化服务的Web推荐构成 ,提出了基于个性化技术构建用户兴趣模型的算法。文章根据用户有无介入兴趣模型构建的学习过程区分n元预测模型、用户兴趣关联规则库及利用用户兴趣词典进行Web页面请求预测的算法。最后介绍了Agent技术在企业个性化Web推荐系统中的应用     

British Writings on Romania: From Travel Accounts to Studies

This article surveys a sample of sources of the information about Romania available to British readers in nineteenth century British newspapers and periodicals. It traces first contacts between the Romanian lands and Britain after the union of the principalities of Wallachia and Moldavia in 1859, then after their independence from the Ottoman Empire. The article highlights an increased Romanian interest in British periodicals, which reported and reviewed Romanian literature and scholarship. The article concludes that nineteenth century British newspapers and periodicals offer a great variety and wealth of new material previously unavailable or unknown to researchers. It also states that only a portion of a large quantity of this material has been indexed and is therefore available via the bibliographic sources mentioned in the article. The author argues for the need of a new and updated British-Romanian bibliography, which can draw on new online resources offering access to thousands of new newspapers and periodical records.     

Slavic Approval Plans: What Works and What Doesn't

ABSTRACT

The paper looks at library approval plans for material published in Slavic, East European, and Eurasian countries from the selector's point of view. Reasons why a selector would or would not want one are examined. Success with approval plans requires monitoring receipts, as well as good and ongoing communication among the selector, the acquistions department, and the vendor. A preliminary list of vendors offering approval plans for the countries of the region appears in the appendix.     

由“资源集聚”向“需求导向”转变——对武汉科技信息服务平台建设的思考

为进一步提升武汉科技信息共享服务平台使用效率,本文从平台资源建设、资源应用、供需对接方式和供需特点等方面分析了武汉科技信息资源服务现状;基于需求和利用的角度,结合平台管理实践和走访用户、问卷调查等研究方法,从信息资源需求主体和平台自身建设管理两个维度,找出制约科技资源供需对接的主要因素;以市场化和制度化为创新理念,从政策创新、机制创新、市场化服务、环境营造、人才培养等方面提出平台建设由“资源集聚”向“需求导向”转变的对策建议.     

Periodicals of Ethnic Minorities in Poland

ABSTRACT

The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed.     

基于文献时间特征的学科主题演化分析方法研究 ——以图书情报学领域为例

在分析文献在不同研究阶段用词时间特征的倾向性基础上,提出一种基于主题模型的研究发展阶段识别方法。重点阐述该方法的构建过程,包括时间特征抽取、发展阶段界定、主题冷热变化分析等步骤。为验证该方法的有效性,针对词频统计法和主题模型方法在主题演化分析中的效果进行比较分析。结果表明,该方法能在识别主题热点和发展趋势的同时,有效地区分不同主题所反映的研究发展阶段。     

Politicking for the Public Library

ABSTRACT

In today's current political environment raising support for millage renewals, bond campaigns or even millage continuations for public libraries is affected by national politics, and a tendency towards tax aversion on principle across the country. The lessons we can learn from the governing boards of small and rural public libraries are worth raising up to a greater national consciousness. Board governance, community consciousness, and facilities management are clear and logical tools that elected boards of public libraries can use to politick for support of libraries.     

Reference Question Answered: Bibliographic Sources for the Ukrainian Periodical Press in the 1840s: Encyclopedias,Bibliographies, Guides,and Library Catalogs

The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire.     

Device-Driven Research: The Impact of Chromebooks in American Schools

Chromebooks and the G Suite group of products, like Google Search, Gmail, and Google Docs, have rapidly expanded in American schools during the past 5 years. The impact of one-to-one Chromebook devices and the pervasive use of Google's software products in American education cannot be overstated. This article explores some of the influences of these products on research, based on the experiences of a librarian and technology coordinator at an elementary education level. The author has several suggestions for effective research with these products in mind.     

Authorship,Gender, and Institutional Affiliation in Library History:

Library historians can learn a great deal from studying the gender of authorship and institutional affiliation of a scholarly journal. The focus of this study is to examine these two aspects of journal production in library history to see who is producing published research in this field. Twenty-three years of Libraries & Culture were chosen as the target volumes. The study reveals that more men than women published in library history as well as locating which institutions were represented. This type of information is usedful to the library historian engaged in the analysis of published scholarship, and more generally to scholars with an interest in patterns of literature production in fields closely related to the social and behavioral sciences.     

Architectures of Knowledge and Literary Tradition: A History of the Almanac in Croatia

ABSTRACT

The history of the almanac in Croatia is reconstructed through primary research in bibliographic and archival sources. The almanac is a vehicle for knowledge communication in informal contexts, engaging both oral tradition and literary forms traceable to medieval literacy and ways of structuring knowledge. The history of the almanac in Croatia reflects the changing context of the book trade, literacy, and the evolution of language. Four main stages are identified: (1) the beginning of the annual almanac in the seventeenth century; astrological almanacs reflecting the sensibility of the Baroque period; (2) the Enlightenment's stimulation of almanac publishing in the spirit of contemporary secular reforms in agriculture and education; (3) nineteenth-and twentieth-century almanac trade, showing complex and overlapping networks for the production, distribution and appropriation of printed almanacs;(4) roughly the end of World War II, when the almanac slowly moved out of the role of a popular mass medium and into specialized niches represented by regional, diaspora, and religious almanacs.