在对这些参数进行估计时，将得分矩阵分别采用得分率、通过率、相关系数、猜测率进行降维处理。
The dimension of Scoring matrixes X is descended by using scoring rate or passing rate or coefficient of correlation or guess rate when estimating those item parameters.
在对这些参数进行估计时，将得分矩阵分别采用得分率、通过率、相关系数、猜测率进行降维处理。
The dimension of Scoring matrixes X is descended by using scoring rate or passing rate or coefficient of correlation or guess rate when estimating those item parameters.
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