授权影印版西文图书的编目探讨   总被引：4，自引：0，他引：4  

骆冬燕  王慧秋 《图书馆学研究》2006,(10):68-70

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。  相似文献   

随书光盘的著录和保管   总被引：13，自引：0，他引：13  

莫跃英 《图书馆论坛》2006,26(3):113-115

随书光（磁）盘与书分开著录和分开保管，方便管理和利用。  相似文献   

古籍数字化的几点思考   总被引：8，自引：2，他引：8  

王发社 《图书馆论坛》2006,26(3):121-122,170

随着文献信息载体向数字化、网络化发展的趋势，古籍也必须以新的载体形态取代传统的文献介质。文章就古籍数字化进行了思考。  相似文献   

从招标文件撰写谈提高图书采购质量   总被引：3，自引：0，他引：3  

陈碧 《图书馆论坛》2006,26(4):156-157,223

根据法律法规的要求，探讨图书馆图书招标文件的撰写，以此为基础，论述了不断提高招标采购图书质量的若干措施。  相似文献   

医院小型图书馆工具书的收藏与利用策略     

庄海燕 《图书馆论坛》2006,26(4):217-219

针对小型医学图书馆的特点，对工具书在图书馆工作中的作用以及工具书收藏进行了探讨，并且对工具书的利用策略进行分析。  相似文献   

版本学浅说     

高举红 《晋图学刊》2005,(3):73-76

阐述了版本学的定义及其研究对象与范围,概述了古籍善本的划分标准与历代版刻的基本特征和鉴定版本的方法。  相似文献   

论自然语言检索系统中的控制问题   总被引：1，自引：0，他引：1  

冀颖 《晋图学刊》2006,(1):14-17

本文详细阐述了自然语言检索系统中的控制问题及后控制词表的工作原理、编制方式、使用情况等。  相似文献   

Two-stage statistical language models for text database selection   总被引：2，自引：0，他引：2  

Hui Yang  Minjie Zhang 《Information Retrieval》2006,9(1):5-31

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.  相似文献   

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

Tuomo Korenius  Jorma Laurikkala  Martti Juhola  Kalervo Järvelin 《Information Retrieval》2006,9(1):33-53

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.  相似文献   

三线典藏制度与动态典藏管理模式   总被引：3，自引：0，他引：3  

刘金玲  叶艳鸣 《图书馆杂志》2004,23(11):35-37,39

本文探讨了三线典藏制度在实际工作中的应用，提出了全新的动态典藏管理模式，并指出动态典藏管理模式是新形势下三线典藏制度的机制保障。  相似文献