共查询到20条相似文献，搜索用时 140 毫秒
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宋力 《高校图书情报论坛》2006,5(3):21-23
本文针对《中图法》第四版中通用复分表的辅助区分号的使用进行了探讨,提出在机编机检环境下扩大辅助区分号的运用范围,根据文献主题特点及单位的需要,增加标引相应的总论(理论)性类目号,地区号,时代号,民族号,通用时间、地点号以增加检索途径和组配检索功能。 相似文献
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一种西文图书克特号的选取方法 总被引：1，自引：0，他引：1
西文图书采用克特号进行分类标引是通用做法。本文介绍的西文图书标引采取添加辅助区分号的方法．可以简化克特号的选取步骤，又可以解决中西文图书索书号差异过大的问题。 相似文献
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辅助区分号的设置与应用 总被引：1，自引：0，他引：1
著者号是目前认为比较好的一种同类书区分号,但著者号因特有的长处而带来了自身无法克服的弱点——重号。我们设计的辅助区分号可以较好地避免重号,同时又延续了著者号的长处,使著者号更加完善。 相似文献
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阐述了辅助区分号在分类中的重要作用,针对当前的分类现状,剖析了如何利用辅助区分号,提高分类质量,以确保图书的有效利用. 相似文献
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逗号和其它点号的通用《河南气象》编辑部王魁山标点符号在使用中具有灵活性,尤其是逗号,常可和分号、冒号、顿号通用。一、逗号和分号的通用复句中并列分句间可以用逗号,也可以用分号。例如：①ｐ为压力,Ｖ为体积,Ｔ为热力学温度。例①中,三个并列的分句间用了逗号... 相似文献
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对辅助区分号及其相关著录信息的认识与运用 总被引：15，自引：0，他引：15
针对目前图书馆所编制的各行其是、五花八门的辅助区分号状况,广阔报它的实质,提出了罗易于规范,同一,操作的辅助区分号设置,并论述了索书号与文献编目的相互关系。 相似文献
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张素 《图书馆工作与研究》2011,(10):80-81
本文针对同类书排列法中种次号的使用情况,总结了同类号下图书种次号难以解决的几种典型问题,提出中小型图书馆可以采用在种次号后加辅助区分号的方法,通过制订严格的本馆索书号取号细则实现图书进一步聚类。 相似文献
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M J Coe 《Bulletin of the Medical Library Association》1970,58(4):587-597
Two-word compression techniques, the University of Chicago experimental search code and a phonetic code similar to the SOUNDEX coding system, were tested as search codes on a data base of 7,464 bibliographic records. These codes were automatically generated and tested for uniqueness. A modified version of the University of Chicago search code produced the best results with a uniqueness factor of 98.83 percent. The algorithms for generating these codes are explained, and implication of the findings for medium-sized libraries are discussed. 相似文献
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Abstract This paper addresses some to the problems associated with the ability of elementary school children to successfully retrieve material in the school library media center using either the card or computer catalogues and presents some alternative methods of classification which may help to alleviate these problems. Primary objectives of the paper include inquiry into the need for an alternative method of classification for children, whether children of elementary school age have the ability to successfully use a system of classification, the extent to which the use of colors and/or symbols as search aides may facilitate children/s search efforts and the steps involved in the evolution of such an alternative classification system. Several case studies are examined and a detailed case study of The Common School Library in Amherst, Massachusetts is presented. Findings of this study indicate that children do have the ability to use a classification system which is designed in keeping with their developmental level and that the use of colors and/or symbols as supplementary search tools does facilitate children/s search efforts. The author also presents recommendations regarding the use of alternative systems of classification with other segments of the population who may have difficulty using standard means of library classification. 相似文献
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Nieves R. Brisaboa Antonio Fariña Gonzalo Navarro José R. Paramá 《Information Retrieval》2007,10(1):1-33
Variants of Huffman codes where words are taken as the source symbols are currently the most attractive choices to compress
natural language text databases. In particular, Tagged Huffman Code by Moura et al. offers fast direct searching on the compressed
text and random access capabilities, in exchange for producing around 11% larger compressed files. This work describes End-Tagged
Dense Code and (s, c)-Dense Code, two new semistatic statistical methods for compressing natural language texts. These techniques permit simpler
and faster encoding and obtain better compression ratios than Tagged Huffman Code, while maintaining its fast direct search
and random access capabilities. We show that Dense Codes improve Tagged Huffman Code compression ratio by about 10%, reaching
only 0.6% overhead over the optimal Huffman compression ratio. Being simpler, Dense Codes are generated 45% to 60% faster
than Huffman codes. This makes Dense Codes a very attractive alternative to Huffman code variants for various reasons: they
are simpler to program, faster to build, of almost optimal size, and as fast and easy to search as the best Huffman variants,
which are not so close to the optimal size.
相似文献
| José R. ParamáEmail: |
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本文认为,根据以往奥运会东道主的成功经验,北京奥运会应重点向世界展示的中国文化符号分为四大类:行为符号、实物符号、言语符号和颜色符号。 相似文献
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论文从文字代码、图像、布局排版、搜索引擎、数据库等5个方面着手，对图书馆主页加速技术进行研究，并指出了加速与优化图书馆主页的一系列方法。 相似文献
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基于用户查询关键词的网页去重方法研究 总被引：2，自引：0，他引：2
在研究传统的基于特征码去重算法的基础上,针对元搜索引擎中网页重复现象,提出一种基于用户查询关键词的网页去重方法,提高元搜索引擎检索质量,并且介绍算法的实现过程,通过实验验证算法的有效性。 相似文献
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基因及蛋白质符号的规范编排 总被引：3，自引：0，他引：3
科技期刊中基因符号、蛋白质符号使用频率很高 ,但也较难掌握。目前不少学术期刊生物和医学论文中的基因符号、蛋白质符号的用法存在不规范的现象。根据有关命名系统 ,探讨常用基因符号、蛋白质符号的规范化表达方式 相似文献