高考作文网上阅卷区分度的数学模型  

The Mathematical Model for Internet Grading Discrimination of Composition in CEE

作　　者：田俊忠[1] 

机构地区：[1]西北第二民族学院信息与计算科学系,银川750021

出　　处：《工程数学学报》2005年第8期49-52,共4页Chinese Journal of Engineering Mathematics

基　　金：宁夏高等学校科学研究项目（教财[2003]92号,项目编号：216）.

摘　　要：高考作文网上阅卷的关键问题之一就是如何确定两评与三评的区分度，它将直接影响作文网上阅卷的科学性和对考生的公平性。本文给出了区分度A、平均评分差异δ和三评阅卷工作量a三者之间的函数关系式，从而建立了区分度A的数学模型，并进行数值模拟与计算，进一步说明区分度A数学模型的合理性，这是建立取分函数数学模型的基础与前提。One of the crucial issues for internet grading in college entrance examination （CEE for short） is how to establish the discrimination between the second and third evaluations, which has an immediate effect on the validity and reliability of the evaluation and the fairness to students＇ performance. This paper suggests the functional relationship among the discrimination A, average marking variation δ and the third grading amount α, establishes the mathematical model of discrimination A, and conducts numerical simulation to show the rationality of the model for discrimination A, The obtained results are fundamental for scoring functional mathematical model.

关 键 词：数学模型 区分度 平均评分差异 三评阅卷工作量 

分 类 号：O212.2[理学—概率论与数理统计]