矩阵维度对Kappa作弊甄别方法性能的影响  

The Influences of Matrix Dimension on the Performance of Kappa

作　　者：孔祥[1] 

机构地区：[1]北京语言大学考试安全研究中心

出　　处：《考试研究》2013年第6期54-58,53,共6页Examinations Research

摘　　要：本文通过对Kappa作弊甄别方法中顺序量表的44矩阵算法进行优化,研究矩阵维度的变化对Kappa方法甄别率及I型错误率的影响,并提出用于比较甄别性能的KX系数及基于矩阵维度选择算法的KappaX作弊甄别方法。This article investigates the effectiveness, caused by the change of dimensions, to the detection rate and Type I error rate of Kappa approach. The approach used in this study is to optimize the 4 ＊ 4 matrix calculating method for ordinal scaling of Kappa. This article also presents KX index, a new index for comparing the detecting efficiency, and the detecting procedure for Kappa-X which chooses the calculating method based on the dimensions of the matrix.

关 键 词：KAPPA Kappa-X 矩阵 作弊 甄别率 I型错误率 

分 类 号：G424.74[文化科学—课程与教学论]