教育数据挖掘(Educational Data Mining,EDM)是一门涉及计算机科学、教育学、统计学的交叉学科。它致力于探索来自教育环境的独特数据,其目的是更好地了解学生及其学习环境,从而提高教育成效。为了深入分析EDM的研究进展,从Web of Scie...教育数据挖掘(Educational Data Mining,EDM)是一门涉及计算机科学、教育学、统计学的交叉学科。它致力于探索来自教育环境的独特数据,其目的是更好地了解学生及其学习环境,从而提高教育成效。为了深入分析EDM的研究进展,从Web of Science库相关文献、国内外研究现状对EDM进行了系统性梳理,介绍了EDM的工作流程,把数据挖掘技术在教育领域的应用归纳为4类,对处于快速发展阶段的一些EDM典型案例进行了统计分析并讨论了其不足与发展趋势。展开更多
In order to discuss the efficiency of visual search of the taekwondo athletes with different kinds of trait anxieties, this article has selected 30 taekwondo athletes with high trait anxieties and another 30 ones with...In order to discuss the efficiency of visual search of the taekwondo athletes with different kinds of trait anxieties, this article has selected 30 taekwondo athletes with high trait anxieties and another 30 ones with low trait anxieties as the testees so as to conduct respective investigations on their visual search reaction time and accuracy of reaction. The results show that the reaction time of individuals with high trait anxieties is significantly longer than that of the individuals with low trait anxieties; the reaction time under threatening stimuli is significantly longer than that under no conditions of threatening stimuli; the reaction accuracy rate of visual search reaction of taekwondo athletes under threatening stimuli is significantly lower than that under no threatening stimuli.展开更多
文摘教育数据挖掘(Educational Data Mining,EDM)是一门涉及计算机科学、教育学、统计学的交叉学科。它致力于探索来自教育环境的独特数据,其目的是更好地了解学生及其学习环境,从而提高教育成效。为了深入分析EDM的研究进展,从Web of Science库相关文献、国内外研究现状对EDM进行了系统性梳理,介绍了EDM的工作流程,把数据挖掘技术在教育领域的应用归纳为4类,对处于快速发展阶段的一些EDM典型案例进行了统计分析并讨论了其不足与发展趋势。
文摘In order to discuss the efficiency of visual search of the taekwondo athletes with different kinds of trait anxieties, this article has selected 30 taekwondo athletes with high trait anxieties and another 30 ones with low trait anxieties as the testees so as to conduct respective investigations on their visual search reaction time and accuracy of reaction. The results show that the reaction time of individuals with high trait anxieties is significantly longer than that of the individuals with low trait anxieties; the reaction time under threatening stimuli is significantly longer than that under no conditions of threatening stimuli; the reaction accuracy rate of visual search reaction of taekwondo athletes under threatening stimuli is significantly lower than that under no threatening stimuli.