| 李萌，阳小华.基于距离的异常成绩检测方法[J].南华大学学报(自然科学版),2009,23(4):70~73.[LI Meng,YANG Xiao-hua.An Approach of Distance-based Detection to Grade-outliers[J].Journal of University of South China(Science and Technology),2009,23(4):70~73.] |
| 基于距离的异常成绩检测方法 |
| An Approach of Distance-based Detection to Grade-outliers |
| 投稿时间：2009-06-03 |
| DOI： |
| 中文关键词: 数据质量 数据清洗 异常成绩检测 |
| 英文关键词:information quality data cleansing detection of grade outliers |
| 基金项目:湖南省教育厅十五规划2003基金资助项目（XJK03CG021） |
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| 中文摘要: |
| 数据质量对于学生成绩具有十分重要的意义.本文将教育学原理与数据清洗技术相结合，提出了基于距离的异常成绩检测方法.在理论上论证了方法的合理性，并通过实验验证了方法的有效性.本文的工作不仅对于提高成绩管理系统的运行质量有直接的作用，而且为将数据质量研究应用于教育信息化领域提供了很好的开端. |
| 英文摘要: |
| Information quality has fundamental significance to student grade.Having combined the theory of pedagogy with data cleansing technique,we propose an approach of distance-based detection of grade-outliers in this paper.The rationality of the approach has been argued and its availability has been verified through our experiment.The results of this paper not only have direct effect on improving the quality of grade management system,but also provide a fine start to apply the study of information quality to educational informationization field. |
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