决策树ID3算法在学生成绩中的应用   总被引：2，自引：0，他引：2  

姜红艳 《鞍山师范学院学报》2008,10(4)

介绍了数据挖掘中决策树的分类方法和概念,以及著名的ID3算法,同时也介绍了ID3算法在学生成绩中的应用.  相似文献   

Teachers learning how to use data: A synthesis of the issues and what is known     

《Teaching and Teacher Education》2016

This article provides a synthesis of the articles found in the special issue on data use. The synthetic piece contextualizes how the articles contribute to the knowledge base of how teachers use data. It synthesizes the findings by identifying key common themes. It then describes gaps in the current knowledge base and identifies the requisite steps needed to address those gaps.  相似文献   

数据挖掘技术在美国院校研究中的应用   总被引：6，自引：0，他引：6  

常桐善 《复旦教育论坛》2009,7(2):72-79

数据挖掘是一项新兴的技术,是商业智能的重要组成部分.近年来,随着教育决策对量化分析和研究结果的愈加依赖,这项技术在美国高校管理和院校研究中的应用越来越广泛.许多研究表明这项技术能帮助大学管理人员更好地分析数据,从而获取潜藏的、有用的信息和知识,最终提高决策效率.  相似文献   

The role of social capital in students’ perceptions of progress in higher education     

Lidia Daza 《Educational Research and Evaluation》2016,22(1-2):65-85

This paper aims to analyse the effects of students’ social relationships at university on students’ success. Specifically, whether a student with heterogeneous relationships obtains better academic results than a student whose relationships are mostly with classmates. Further, the research examines whether students’ social relationships make up for their parents’ lack of human capital. A survey was answered by a sample of 867 students from universities in the metropolitan region of Barcelona. The findings suggest that the effects of social relationships are not always positive. The benefits of social networks at university interact with the type of degree studied, the student’s dedication to studies, and the student’s social class. Perceptions of progress for each category of students is different: It is more positive for those with frequent heterogeneous relations, who do not work or do so for a few hours, and for those who are enrolled in “hard” science courses.  相似文献   

基于EXCEL实现实验数据计算机处理   总被引：2，自引：0，他引：2  

万伟  牟玲 《洛阳工业高等专科学校学报》2005,15(3):37-39

从程序设计上描述了基于EXCEL解决物理实验数据按误差理论要求在计算机上处理关键问题的解决方法和程序编制思路。  相似文献   

幼儿教师教学效能感的调查与研究     

郑荣双  李梓琦 《青岛大学师范学院学报》2011,28(2):57-64

为探究相关因素对幼儿教师教学效能感的影响,采用自我和谐量表、领悟社会支持量表、教师教学效能感量表对湛江市135名幼儿教师进行调查。结果发现：1.教学效能感在婚姻状况和职称上达到了显著性差异;2.教学效能感总分随学历水平和职称的提高而提高;3.自我和谐、领悟社会支持、教学效能感之间具有极显著相关;4.自我和谐和领悟社会支持对教学效能感的发展有极其显著的预测作用。  相似文献   

歧视知觉比贫困更值得关注——从两者对贫困与非贫困儿童行为的影响来谈     

李海燕  申继亮  王晓丽  张莉 《中国特殊教育》2011,(2)

为了考察贫困和歧视知觉对儿童亲社会行为和问题行为的影响,采用问卷调查方式,测查了北京、天津、洛阳和南阳四个城市20多所学校的2670名5-8年级儿童,考察其物质资源、所拥有的教育资源,歧视知觉及亲社会行为和问题行为.结果发现:(1)贫困家庭儿童的物质资源指数、教育资源指数显著低于非贫困组,歧视知觉显著高于非贫困组;(2)贫困组儿童的亲社会行为显著低于非贫困组,而问题行为显著高于非贫困组.(3)在贫困与非贫困家庭中,歧视知觉对儿童亲社会行为和问题行为均有显著的预测作用,随着经济状况的改善,歧视知觉对问题行为的预测更大.结果说明,歧视知觉比贫困更值得关注,可以为贫困生心理健康教育提供一定的参考.  相似文献   

大数据时代高校图书馆学科服务模式研究     

王岩 《环球赛鸽科技》2015,(10)

本文用过对大数据时代图书馆学科面对的机遇与挑战,分析了图书馆学科服务当下存在的问题,系统地对学科服务的转型以及新形势下学科服务模式进行了讨论和研究。  相似文献   

组织政治知觉的概念、结构与相关变量研究述评     

高冬东 《保定学院学报》2015,(1):110-113

在对组织政治知觉的概念进行梳理的基础上,阐述组织政治知觉的概念;总结国内外学者对组织政治知觉结构的不同看法,介绍组织政治知觉的测量工具;对组织政治知觉的前因变量、结果变量、中介变量和调节变量进行总结并提出以后的努力方向。  相似文献   

Effects of emotional exemplars in responsibility attribution-framed news reports on perception and evaluations of social issues     

Hongsik Yu  Jaehee Cho 《亚洲交流杂志》2015,25(5):525-545

This study investigated the separate and combined effects of emotion-laded exemplars and responsibility frames on readers' perceptions and evaluations. Two hundred and sixty-nine students participated in an experiment involving a news story that dealt with the social issue of homelessness in South Korea. Six versions of a news story differed in emotion-laden exemplars with textual information (anger-evoking, sympathy-evoking) and responsibility news frames (attribution of responsibility to society, attribution of responsibility to individual, and no frame). This study found that, compared to the responsibility frames, emotion-laden exemplars significantly affected readers' moral evaluations toward the target individuals and their perceptions of the social issue's severity. The results also indicated that the anger-evoking exemplars influenced readers to attribute responsibility of a problem more to the target individuals than the societal system. In contrast, the sympathy-evoking exemplars prompted greater attribution to the societal system than the target individuals. The likelihood of a reader supporting related governmental aid policy was influenced by both emotional exemplars and responsibility news frames. Implications for further research are discussed.  相似文献