我国专利技术评价与预测研究

Using fuzzy mathematics method, this paper evaluates and predicts the patent technology of China by analyzing China patent information.     

1993-2002年国际发明专利热点

本文利用文献计量学的方法，以《德温特世界专利创新索引》为数据源，以《国际专利分类表》为检索依据，通过统计1993——2002年间各类发明专利的数量来分析这一时段内国际发明专利的热点。     

编研工作:应是提高高校档案利用率的最佳切入点

文章从编研工作在高校档案工作中的地位、作用和当前高校档案利用工作中存在的现象分析入手，提出了高校档案编研工作的要求和编制方法。证实了编研工作应是提高高校档案利用率的最佳切入点。     

CECUP关于电子出版物用户权利的立场

本文对电子环境下用户和权利拥有者的有关权利与义务提出了基本的立场和观点，讨论了对于享有电子版权的资料的合法使用问题，旨在平衡用户、图书馆和权利拥有者之间的权益关系。     

文献资源共享与知识产权保护关系辨析

文献资源共享是我国图书馆事业发展的必由之路，也是信息社会的必然选择；但在我国近五十年共享历史发展过程中，因为各种各样的原因，步履艰难，其中知识产权问题，没有明确的法律界定，文献资源共享的“共享性”，和知识产权的“专有性”、“排它性”的矛盾一直困扰我国文献资源共享的步伐，如何在尊重知识产权的前提下，充分地实现文献资源共享．鼓励知识的生产与促进知识传播均衡协调发展，是目前图书馆界学者共同探讨的问题。     

检索东北地方古籍文献应注意的问题

东北地处祖国边陲，历史上东北各民族人民与用边相邻国家的民族不断的融合、交往，使得东北地方文献。尤其是东北地方古文献的跨国性问题表现得特别突出。东北地方文献无论从内容上、著者的国别上以及表达的文字上，都充分体现出跨国性的特点，作为研究古籍的人员来讲，应充分考虑起跨国性的一面，以期检索到全面的古籍文献资料。     

Web page title extraction and its application

This paper is concerned with automatic extraction of titles from the bodies of HTML documents (web pages). Titles of HTML documents should be correctly defined in the title fields by the authors; however, in reality they are often bogus. It is advantageous if we can automatically extract titles from HTML documents. In this paper, we take a supervised machine learning approach to address the problem. We first propose a specification on HTML titles, that is, a ‘definition’ on HTML titles. Next, we employ two learning methods to perform the task. In one method, we utilize features extracted from the DOM (direct object model) Tree; in the other method, we utilize features based on vision. We also combine the two methods to further enhance the extraction accuracy. Our title extraction methods significantly outperform the baseline method of using the lines in largest font size as title (22.6–37.4% improvements in terms of F1 score). As application, we consider web page retrieval. We use the TREC Web Track data for evaluation. We propose a new method for HTML documents retrieval using extracted titles. Experimental results indicate that the use of both extracted titles and title fields is almost always better than the use of title fields alone; the use of extracted titles is particularly helpful in the task of named page finding (25.1–30.3% improvements).     

检索语言在文献检索教学中的定位

Focused on the use of retrieval language in document retrieval teaching, this article discusses the influence of retrieval language on retrieval tool, retrieval mode and retrieval efficiency. It suggests that a retrieval language system be constructed and points out its proportion to document retrieval teaching.     

多约束条件下检索组合模型的应用

With an analysis of the main document databases, this paper discusses the combined retrieval models used under the multi-restrictive conditions by use of the conditional probability theory. The paper provides system programmers with combined probability theory and its application examples. It's useful for users to increase recall ratio, pertinency ratio and search rate.     

文献型数据库的建设：中国稀土文献数据库特点剖析

结合中国稀土文献库的建设,着重论述了文献收集、主题标引、检索软件编制及检索服务的最优化做法,说明了建成高水平文献型数据库的内容和途径,阐明了中国稀土文献数据库的特点,提出了做好文献计算机检索服务的重要因素。