用户标注的词语网络与语义描述

用户标注具有简洁、交流与共享、自由表达、推荐与检索等特点,但是它的平面结构使其很难适应语义网的需要,因而有必要进行语义建构,建立用户标注模型和语义联系,以便使用元数据与本体语言对用户标注进行语义描述,使之成为标签本体,以适应新一代因特网的发展。     

Folksonomies的结构模式研究

本文首先分析了Folksonomy的形成过程,然后介绍了Folksonomy的形式化定义、特征、标签的种类及其之间的关系,最后探讨了关联规则挖掘及PageRank在Folksonomies中的应用.     

Personalization of tagging systems

Social media systems have encouraged end user participation in the Internet, for the purpose of storing and distributing Internet content, sharing opinions and maintaining relationships. Collaborative tagging allows users to annotate the resulting user-generated content, and enables effective retrieval of otherwise uncategorised data. However, compared to professional web content production, collaborative tagging systems face the challenge that end-users assign tags in an uncontrolled manner, resulting in unsystematic and inconsistent metadata.This paper introduces a framework for the personalization of social media systems. We pinpoint three tasks that would benefit from personalization: collaborative tagging, collaborative browsing and collaborative search. We propose a ranking model for each task that integrates the individual user’s tagging history in the recommendation of tags and content, to align its suggestions to the individual user preferences. We demonstrate on two real data sets that for all three tasks, the personalized ranking should take into account both the user’s own preference and the opinion of others.     

A concept–relationship acquisition and inference approach for hierarchical taxonomy construction from tags

Taxonomy construction is a resource-demanding, top–down, and time consuming effort. It does not always cater for the prevailing context of the captured information. This paper proposes a novel approach to automatically convert tags into a hierarchical taxonomy. Folksonomy describes the process by which many users add metadata in the form of keywords or tags to shared content. Using folksonomy as a knowledge source for nominating tags, the proposed method first converts the tags into a hierarchy. This serves to harness a core set of taxonomy terms; the generated hierarchical structure facilitates users’ information navigation behavior and permits personalizations. Newly acquired tags are then progressively integrated into a taxonomy in a largely automated way to complete the taxonomy creation process. Common taxonomy construction techniques are based on 3 main approaches: clustering, lexico-syntactic pattern matching, and automatic acquisition from machine-readable dictionaries. In contrast to these prevailing approaches, this paper proposes a taxonomy construction analysis based on heuristic rules and deep syntactic analysis. The proposed method requires only a relatively small corpus to create a preliminary taxonomy. The approach has been evaluated using an expert-defined taxonomy in the environmental protection domain and encouraging results were yielded.     

基于贝叶斯层级模型的社会化标注主题聚类探讨

在资源共享性的社会化标注网站上,大量无标签或者缺少标签的资源往往会因为标签信息的不完整,以致无法被有效地利用和检索。为了有效地进行资源检索,借助于贝叶斯层级模型,对被标注信息资源的主题进行聚类,并生成最终的主题聚类结果,相关实验结果显示了其有效性。     

社会标注系统中标签推荐方法研究进展

主要对社会标注系统中的标签推荐方法的研究进行概述,首先对社会标注系统标签推荐的特点进行分析,而后从推荐方法的类型入手对领域的研究文献进行研究。最后,总结本文工作,展望社会标注系统中标签推荐方法的研究发展趋势。     

知识服务平台的设计与应用——以重大传染病信息知识服务平台为例

以重大传染病信息处理和使用为例,探讨知识服务平台的设计与应用。设计的知识服务平台以本体为基础,以重大传染病信息为采集和组织对象,建立了知识加工系统、知识库构建与维护系统、基于本体的全文检索系统、传染病热点信息采集与分析系统等,为传染病政策管理人员、科研人员提供多层次的知识和内容服务。     

基于注疏注音信息的词性自动校正

为了提高先秦文献词性标注的精确率,提出一种利用注疏文献的注音信息来进一步校正词性标注结果的方法。《春秋左传正义》中对破读字音有注释,且有较为规范的注音体例,在标注了《广韵》中多音字词性的基础上,通过比对注音,确定《左传》中某多音字的读音,进而确定词性。实验一共检查了词性标注精确率达90％的《左传》中1231个含多音字的句子,涉及到单音节词词型423个,正确校正了41个词型共92处错误。对古籍校勘及古籍信息处理有较高价值。     

Potential and Challenges of Subject Access in Libraries Today on the Example of Swedish Libraries

Column Editor's Notes

The “Advances in Library Data and Access” column examines technological advances internal and external to libraries. The focus is on how library data is created and used. The strength of the column is its broad, international focus, and contributors are encouraged to explore issues and recent advances in information technology relevant to their geographical region, as well as the larger, global audience. Interested authors are invited to submit proposals and articles to the column editor at moulaisonhe@missouri.edu. Please include “IILR Submission” in the subject line of the e-mail.     

汉语成语的语法功能研究

成语在句子中的作用相当于实词,分别对成语充当谓语、定语、状语、补语、主语、宾语的情况进行统计和分析表明,成语大多数具有动词性,其次为形容词性、副词性和名词性。将统计结果与北大的《现代汉语语法信息词典》中的部分成语进行比较分析发现,成语所能充当的语法功能比我们想象的要丰富得多。