属性重要度的英语四级考试成绩分析

Analysis of CET-4 Exam Based on Attributes Importance

大学英语四级考试(CET-4)成绩的高低是社会评价大学生英语水平的重要指标之一,即能检测学生的学习情况,又能对以后的教学提供宝贵的信息。为了研究CET-4考试中各题型对总分数的重要性,运用粗糙集理论知识,对影响学生成绩的属性重要度进行计算,并对其进行属性约简,从而分析各题型对总分数的的重要性,减少了人为主观因素对评价结果的影响。应用表明,分析方案更科学、合理。结果表明:CET-4成绩中,"阅读"部分的属性重要度最大,在"听力"与"写作和翻译"属性重要度的二倍以上,而后面二者的重要度相当。该研究结果对大学英语教学中更好备考CET-4有帮助作用,同时也给CET-4命题者提供反馈信息,对进一步改革CET-4有一定的参考价值。

In order to get the knowledge of the importance of the sections in College English Test Band 4 （ CET4）, we made the attributes reduction and calculated the attributes importance on fifty samples according to the rough set theory. The results show that the reading section has the largest importance degree, it is even as large as the twice of the importance of the listening section and the writing and translation section,while the latter two sections have nearly equal importance. This research is beneficial to the English teaching in college, and is also a valuable reference in the further reform of the CET - 4.