基于数据挖掘技术的Web智能服务算法     

刘友华  闵建宏 《现代图书情报技术》2003,(3):58-59

提出了一种基于数据挖掘技术的Web智能服务算法，它通过对Web数据模型的转换，发现并建立有关用户意向关联知识库，然后再利用知识库中的关联规则来预测用户行为，从而提高了用户浏览器访问速度。该研究内容属目前智能信息检索领域的重要研究课题，具有一定的理论和实践意义。  相似文献   

基于多代理机制的分布式入侵检测系统的研究     

余晓征 《广州广播电视大学学报》2006,6(1):23-26

鉴于当前基于主机入侵检测系统的局限性,使得基于代理的入侵检测技术显得日益重要。讨论从基于主机的入侵检测系统的局限性出发,提出了一种基于多代理机制的分布式入侵检测系统方案,并对入侵检测系统中主机检测器基于多代理的技术进行了详细分析和难点解析。  相似文献   

Unicorn系统中简编记录升级为详编记录的新方法研究   总被引：1，自引：0，他引：1  

葛廷霞  宋雅范 《现代图书情报技术》2001,17(6):17-18

概括介绍了在Unicorn 系统中如何使详编记录在装载时成批替换数据库中的简编记录, 以及这种方法的可行性、应用情况和提高替换率的方法。  相似文献   

Introductory statistics in the garden          下载免费PDF全文

John C. Wagaman 《Teaching Statistics》2017,39(2):52-56

This article describes four semesters of introductory statistics courses that incorporate service learning and gardening into the curriculum with applications of the binomial distribution, least squares regression and hypothesis testing. The activities span multiple semesters and are iterative in nature.  相似文献   

The emergence of the quantified child     

Rebecca Smith 《Discourse: Studies in the Cultural Politics of Education》2017,38(5):701-712

Using document analysis, this paper examines the historical emergence of the quantified child, revealing how the collection and use of data has become normalized through legitimizing discourses. First, following in the traditions of Foucault's genealogy and studies examining the sociology of numbers, this paper traces the evolution of data collection in a range of significant education policy documents. Second, a word count analysis was used to further substantiate the claim that data collection and use has been increasingly normalized through legitimizing discourses and routine actions in educational settings. These analyses provide evidence that the need to quantify educational practices has been justified over long periods of time through a variety of documents and that the extent to which data governs educators’ thoughts, discourses, and actions has dramatically increased during the past century.  相似文献   

一体化地籍空间数据库建设的关键问题研究     

雷虎  黄雷鸣 《科技广场》2007,(9):93-96

由于城乡土地建设的发展需要,建立一个能够统一分类、统一调查、统一统计的城乡一体化信息系统便成为了当务之急。本文从建立城乡一体化地籍空间数据库的几个关键问题展开论述,分析了城乡一体化地籍的管理模式,提出了采用SDE来实现空间信息和非空间信息的统一管理,研究了新旧地类的转换和转换方法。  相似文献   

数字图书馆中IDSS的研究   总被引：2，自引：0，他引：2  

胡蓉  张渝  章雷 《情报科学》2004,22(1):92-95

本文在分析数字图书馆决策特点的基础上，提出了一个多专家系统集成式的基于数据挖掘和智能代理技术的智能决策支持系统框架。  相似文献   

数据查询计算机化     

赵丽芬 《黑龙江科技信息》2007,(11S):76-77

以键宽和键高查询为例子，以小见大阐述数据查询的实现。键宽键高查询以Delphi中的ADO组件连接加密的MS—ACCESS数据库实现。我希望通过本文企业和工厂中的机械设计人员由此掌握一种应用程序开发工具，从耗力耗时易错的手工查询摆脱出来，这对以后的工作和学习大有裨益。  相似文献   

图像数据库的研究     

吴泽九 《科技广场》2005,(3):60-62

简述了图像数据库的发展，对图像数据库的结构、分类及其特性进行了研究。并讨论了图像数据库的数据模型。最后给出了图像数据库的检索方法。  相似文献   

Matrix permanent inequalities for approximating joint assignment matrices in tracking systems     

Jeffrey K. Uhlmann 《Journal of The Franklin Institute》2004,341(7):569-593

This paper examines some of the combinatorial issues associated with the batch data association problem arising in tracking and correlation applications. A procedure is developed that addresses a large class of data association problems involving the calculation of permanents of submatrices of the original association matrix. This procedure yields what is termed the Joint Assignment Matrix (JAM), which can be used to optimally rank associations for hypothesis selection. Because the computational cost of the permanent scales exponentially with the size of the matrix, improved algorithms are developed both for calculating the exact JAM and for generating approximations to it. Empirical results suggest that at least one of the approximations is suitable for real-time hypothesis generation in large scale tracking and correlation applications. Novel theoretical results include an improved upper bound on the calculation of the JAM and new upper bound inequalities for the permanent of general nonnegative matrices. One of these inequalities is an improvement over the best previously known inequality.  相似文献