授权影印版西文图书的编目探讨

在对授权影印版西文图书的特征进行分析描述的基础上，结合西文文献编目原则及MARC21著录格式，探讨了该类出版物的文种归属问题及其编目方法，并提出了建议。     

图书馆软环境发凡(下)

图书馆应当拥有自己的精神资源。图书馆应当营造自己的精神家园。原因是：图书馆的发展光靠管理与制度体系的完善，仍然是不能独善其身的，精神动力的领军作用不可或缺。     

图书馆危机的类型及应对策略

文章简要概述了现代图书馆所面临的十大主要危机，对危机的基本特性、危机处理的意义和作用进行了系统的分析，并在此基础上提出了危机应对平台的全面架构与立体打造。     

广东省图书馆文献资源建设发展战略

广东省要建设成文化大省，必须建立广东省图书馆文献资源建设战略，广东省图书馆事业有许多优势，通过科学规划，精心组织，文献资源建设发展战略目标一定能够有计划分步骤顺利实现。     

论中专图书馆的建设现状与发展对策

中专图书馆的建设与发展，无论在理论上还是实践中，均未得到足够重视，文章阐述了中专图书馆建设滞后的现状并指出其成因，同时提出了发展对策，以期得到同行的共鸣和专家的指正。     

数字信息资源长期保存技术策略分析*

技术策略作为数字信息资源长期保存中至关重要的组成部分，在很多项目中得到了广泛地研究。简略地介绍技术策略的发展概况，分析技术策略分析框架中的关键因素，详细描述几种独特的保存技术策略的理论和实践方法，并对这几种保存技术策略进行简略的总结对比。     

复合图书馆的期刊工作探析

在复合图书馆时期,期刊文献是以数字化和纸本形式并存,期刊服务工作呈现多元化和多层次化,这对图书馆员的素质提出了更高的要求。因此,加强馆员自身建设和对用户的培训教育,使期刊管理工作适应信息时代的要求就成为当务之急。     

Two-stage statistical language models for text database selection

As the number and diversity of distributed Web databases on the Internet exponentially increase, it is difficult for user to know which databases are appropriate to search. Given database language models that describe the content of each database, database selection services can provide assistance in locating databases relevant to the information needs of users. In this paper, we propose a database selection approach based on statistical language modeling. The basic idea behind the approach is that, for databases that are categorized into a topic hierarchy, individual language models are estimated at different search stages, and then the databases are ranked by the similarity to the query according to the estimated language model. Two-stage smoothed language models are presented to circumvent inaccuracy due to word sparseness. Experimental results demonstrate that such a language modeling approach is competitive with current state-of-the-art database selection approaches.     

Hierarchical clustering of a Finnish newspaper article collection with graded relevance assessments

Search facilitated with agglomerative hierarchical clustering methods was studied in a collection of Finnish newspaper articles (N = 53,893). To allow quick experiments, clustering was applied to a sample (N = 5,000) that was reduced with principal components analysis. The dendrograms were heuristically cut to find an optimal partition, whose clusters were compared with each of the 30 queries to retrieve the best-matching cluster. The four-level relevance assessment was collapsed into a binary one by (A) considering all the relevant and (B) only the highly relevant documents relevant, respectively. Single linkage (SL) was the worst method. It created many tiny clusters, and, consequently, searches enabled with it had high precision and low recall. The complete linkage (CL), average linkage (AL), and Ward's methods (WM) returned reasonably-sized clusters typically of 18–32 documents. Their recall (A: 27–52%, B: 50–82%) and precision (A: 83–90%, B: 18–21%) was higher than and comparable to those of the SL clusters, respectively. The AL and WM clustering had 1–8% better effectiveness than nearest neighbor searching (NN), and SL and CL were 1–9% less efficient that NN. However, the differences were statistically insignificant. When evaluated with the liberal assessment A, the results suggest that the AL and WM clustering offer better retrieval ability than NN. Assessment B renders the AL and WM clustering better than NN, when recall is considered more important than precision. The results imply that collections in the highly inflectional and agglutinative languages, such as Finnish, may be clustered as the collections in English, provided that documents are appropriately preprocessed.     

电子教学参考资料系统的著作权对策

概述电子教学参考资料系统的特征，分析有关的著作权风险，提出在现有法律环境下建设电子教学参考资料系统的著作权对策。