基于鲁棒相关系数法的信息化决策手段研究

摘要

研究高校各类课程之间的关联关系是信息化教学的手段之一，而分析课程成绩之间的相关性是研究高校课程关联关系的重要方法。针对传统的Pearson相关系数易于受到异常点影响的问题，提出一种基于鲁棒相关系数的成绩关联分析方法。该方法首先建立样本标准差的鲁棒估计器，在此基础上计算相关系数的鲁棒估计，最后将其用于不同课程成绩之间的相关性分析。%Study on the incidence relation among the various courses in colleges and universities is one of information⁃based teaching measures,and analysis of the correlation between course grades is one of the important methods of researching the incidence relation among courses. Aiming at the problem that the traditional Pearson correlation coefficient is influenced by outliers easily,a score correlation analytical method based on robust correlation coefficient is proposed. With the method,the ro⁃bust estimator of sample standard deviation is established. Based on this,the robust estimation of correlation coefficient is calcu⁃lated,which can be applied to correlation analysis between different courses.