国内外1991～2000年关于中小企业信息管理研究成果的分析及思考

统计分析了国内外 1991～ 2 0 0 0年几百篇关于中小企业信息管理研究的论文。近 10年来中小企业的信息管理研究主要集中在 :计算机系统已成为中小企业管理不可缺少的部分 ;互联网成为中小企业获取信息的重要途径和与大企业竞争的入口点 ;专利制度受到中小企业的瞩目 ,信息服务业促进了中小企业的发展。表 1。参考文献 1。     

Teaching Statistics in US — An Alien's s-eye View

This article discusses the author's initial experience of teaching statistics in an American university, and the sort of way he thinks the subject should be taught. (Specifically, he looks at the assumption of normality, and indicates how conventional treatment in the area of hypothesis testing might be modified.) His comments primarily apply to elementary service courses, and particularly to those provided for business students.     

《毕节师范高等专科学校学报》1999～2005年载文统计分析

《毕节师范高等专科学校学报》1999-2005年共发表671篇论文,以其为样本进行载文量、作者情况、引文等的统计分析,揭示《学报》信息输出能力、《学报》作者群的现状与特点、论文的信息来源等情况,为学校的科研管理和升格后《学报》的发展提供一定的依据。     

A statistical information-based clustering approach in distance space

Clustering, as a powerful data mining technique for discovering interesting data distributions and patterns in the underlying database, is used in many fields, such as statistical data analysis, pattern recognition, image processing, and other business applications. Density-based Spatial Clustering of Applications with Noise (DBSCAN) (Ester et al., 1996) is a good performance clustering method for dealing with spatial data although it leaves many problems to be solved. For example,DBSCAN requires a necessary user-specified threshold while its computation is extremely time-consuming by current method such as OPTICS, etc. (Ankerst et al., 1999), and the performance of DBSCAN under different norms has yet to be examined. In this paper, we first developed a method based on statistical information of distance space in database to determine the necessary threshold. Then our examination of the DBSCAN performance under different norms showed that there was determinable relation between them. Finally, we used two artificial databases to verify the effectiveness and efficiency of the proposed methods.     

What is The International Statistical Institute?

This is the second of a short series of articles briefly describing the organisations that sponsor Teaching Statistics.     

2000年《图书情报工作》载文、作者及引文的统计分析

本文运用文献计量学的方法，对2000年出版的《图书情报工作》载文、作者及引文情况进行了统计和分析，阐述了该刊的载文特点、作者特点及引文特点。     

中国近代科技期刊的种类数量与创刊时间统计分析——以上海图书馆馆藏文献为例

【目的】统计分析中国近代科技期刊的情况,为中国近代科技史研究提供材料,并为中国当代科技期刊的发展提供借鉴和启示。【方法】以上海图书馆馆藏中国近代科技期刊为样本,统计分析其种类、数量、各分类最早创刊刊物情况,并根据创刊时间统计其在各年代的分布。【结果】我国近代科技期刊种类广、数量多,学科、地域、时代特色明显,各年代创刊数量受政治经济因素影响而产生波动。【结论】我国近代科技期刊经历了萌芽期、上升期、鼎盛期和回落期。分析内容对当代中国科技期刊的发展也有所启示：科技期刊要适应大众需求并引领潮流,科技期刊的发展需要社会的稳定和国家的强盛。     

15个副省级城市专利发展状况评价与分析

本文首先运用主成分分析方法对15个副省级城市的专利发展状况进行综合评价，进而利用聚类分析方法对各城市的专利实力进行了等级划分，最后通过国际比较和结构分析，指出我国无论是在国家整体的层面，还是在城市区域的层面都存在原始创新能力不足的缺欠．     

网络入侵检测中的数据挖掘技术探讨

针对计算机网络的入侵越来越严重，本文论述了数据挖掘技术在网络入侵检测中的应用，指出了审计数据的挖掘方法及挖掘模式的使用。     

Qualitative evaluation of automatic assignment of keywords to images

In image retrieval, most systems lack user-centred evaluation since they are assessed by some chosen ground truth dataset. The results reported through precision and recall assessed against the ground truth are thought of as being an acceptable surrogate for the judgment of real users. Much current research focuses on automatically assigning keywords to images for enhancing retrieval effectiveness. However, evaluation methods are usually based on system-level assessment, e.g. classification accuracy based on some chosen ground truth dataset. In this paper, we present a qualitative evaluation methodology for automatic image indexing systems. The automatic indexing task is formulated as one of image annotation, or automatic metadata generation for images. The evaluation is composed of two individual methods. First, the automatic indexing annotation results are assessed by human subjects. Second, the subjects are asked to annotate some chosen images as the test set whose annotations are used as ground truth. Then, the system is tested by the test set whose annotation results are judged against the ground truth. Only one of these methods is reported for most systems on which user-centred evaluation are conducted. We believe that both methods need to be considered for full evaluation. We also provide an example evaluation of our system based on this methodology. According to this study, our proposed evaluation methodology is able to provide deeper understanding of the system’s performance.