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本文分析了自动作文评分系统BETSY的工作原理,并采用987个样本的训练集、200个样本的验证集,实证检验该系统在英语作文自动评分中的效果。统计结果显示,BETSY的评分结果与人工评分结果有较强的相关性。实验同时分析了影响BETSY评分精度的原因。
This paper analyzes the working principle of automatic composition score system BETSY, and uses the training set of 987 samples and the verification set of 200 samples to empirically test the effect of this system in English composition automatic grading. The statistical results show that there is a strong correlation between the BETSY score and the artificial score. The experiment also analyzes the reasons that affect the accuracy of BETSY score.