探析自动索引原理     

衡中青  熊歆 《图书馆论坛》2004,24(1):95-96,78

文章试图对自动索引的方法作一些探讨。首先介绍了自动索引的五种理论模型和六种自动标引方法，随后探讨了自动索引中不可或缺的两个对象——全文索引和数据库索引的原理。  相似文献   

ECIP自动编目软件系统设计思想的探讨--兼与张丽娟等同志商榷   总被引：3，自引：0，他引：3  

蒋小耘 《图书馆杂志》2005,24(11):18-20

本文对ECIP计划中自动编目的MARC标准设定问题及自动编目系统实现的设计思想提出了自己的不同见解。  相似文献   

汉语自动分词研究的发展趋势     

刘晓英 《高校图书馆工作》2005,25(4):25-28

汉语自动分词是计算机中文信息处理中的难题。文章通过对现有分词方法的探讨，指出了汉语自动分词研究未来的发展趋势，即传统文本的有效切分，计算机技术的快速发展，改造书面汉语书写规则。参考文献35。  相似文献   

基于用户自然标注的TF-IDF辅助标引算法及实证研究     

陈白雪  宋培彦 《图书情报工作》2018,62(1):132-139

[目的/意义] 从用户角度出发,研究基于用户自然标注的TF-IDF辅助标引算法。[方法/过程] 首先以核心期刊论文中作者标注的关键词和分类号为源数据,通过对关键词词频进行统计,使用TF-IDF算法构建用户标注词表、形成标引知识库,然后通过IK Analyzer分词软件对待标引的科技项目数据进行切词和停用词处理,进而使用TF-IDF算法和位置加权算法提取科技项目数据的特征词,最终实现对科技项目数据进行关键词和分类的同步标引。[结果/结论] 实验结果表明,机标关键词与人标关键词的相似比在60%以上的科技项目数据占总数的68.1%,机标分类号与人标分类号前三位一致的占总数的83.9%,结果表明基于用户自然标注数据并采用TF-IDF算法在关键词和分类标引方面是可行的。  相似文献   

Dimensions: A competitor to Scopus and the Web of Science?     

Mike Thelwall 《Journal of Informetrics》2018,12(2):430-435

Dimensions is a partly free scholarly database launched by Digital Science in January 2018. Dimensions includes journal articles and citation counts, making it a potential new source of impact data. This article explores the value of Dimensions from an impact assessment perspective with an examination of Food Science research 2008–2018 and a random sample of 10,000 Scopus articles from 2012. The results include high correlations between citation counts from Scopus and Dimensions (0.96 by narrow field in 2012) as well as similar average counts. Almost all Scopus articles with DOIs were found in Dimensions (97% in 2012). Thus, the scholarly database component of Dimensions seems to be a plausible alternative to Scopus and the Web of Science for general citation analyses and for citation data in support of some types of research evaluations.  相似文献   

学院自动排监考软件的设计     

胡丹 《人天科学研究》2010,(12):104-105

针对每学期期末学院的监考安排工作,开发了一个基于PowerBuilder的自动排监考软件,在保证安排无冲突的同时,使各教师的总监考次数大致相同,提高了教务人员的工作效率。  相似文献   

Using LSA and text segmentation to improve automatic Chinese dialogue text summarization     

LIU Chuan-han WANG Yong-cheng ZHENG Fei LIU De-rong 《浙江大学学报(A卷英文版)》2007,8(1):79-87

Automatic Chinese text summarization for dialogue style is a relatively new research area. In this paper, Latent Semantic Analysis （LSA） is first used to extract semantic knowledge from a given document, all question paragraphs are identified, an automatic text segmentation approach analogous to Text＇filing is exploited to improve the precision of correlating question paragraphs and answer paragraphs, and finally some ＂important＂ sentences are extracted from the generic content and the question-answer pairs to generate a complete summary. Experimental results showed that our approach is highly efficient and improves significantly the coherence of the summary while not compromising informativeness.  相似文献   

用Visual Foxpro自定义类实现中英文输入法自动切换     

曹帮琴  徐向阳 《洛阳工业高等专科学校学报》2006,16(4):32-34,40

阐述了在VisualFoxpro中通过调用WindowsAPI函数自定义输入法选择类的思路、方法和关键代码,以及通过引用该自定义类在中文应用系统中实现中英文输入法自动切换的方法。并提出了在设计能够适应复杂应用环境、具有更高智能化程度的智慧型自定义输入法选择类时需要解决的问题。  相似文献   

数据检索中索引技术的探讨     

李新英  韩南 《黄冈师范学院学报》2004,24(6):67-68,83

设计索引的目的是为了加快数据检索．文章就与索引相关的一些特征元素．提出了创建索引中数据目录项的3种不同方法．同时对B^ 索引进行了描述．分析了其在进行数据搜索的实现原理．简要个绍了在实现数据删除和插入时的优化思路．  相似文献   

Automatic indexing of online health resources for a French quality controlled gateway     

Aurélie Névéol  Alexandrina Rogozan  Stéfan Darmoni 《Information processing & management》2006

The profusion of online resources calls for tools and methods to help Internet users find precisely what they are looking for. Quality controlled gateway CISMeF provides such services for health resources. However, the human cost of maintaining and updating the catalogue are increasingly high. This paper presents the automatic indexing system currently developed in the CISMeF team to be used as such for preliminary indexing, or after human reviewing for the final indexing. The system architecture, using the INTEX platform for MeSH term extraction is detailed. The results of a first evaluation tend to indicate that the automatic indexing strategy is relevant, as it achieves a precision comparable to that of other existing operational systems. Moreover, the system presented in this paper retrieves keyword/qualifier pairs as opposed to single terms, therefore providing a significantly more precise indexing. Further development and tests will be carried out in order to improve the coverage of the dictionaries, and validate the efficiency of the system in the indexers’ everyday work.  相似文献