证据权重法在大学英语成绩评价中的引入及应用

The Introduction and Application of Evidence Weight Method in College English Achievement Evaluation

针对目前传统大学英语课程考试评价体系的刚性评价方法难以定量反映学生的真实水平和能力问题,在大学英语综合成绩评估过程中,尝试引入地质学中的非线性统计学方法——"证据权重法",选取大学英语综合成绩评定中听、说、读、写、译等12个证据因子,通过证据权重模型调整因子的关联与消长趋势控制,借助本模型对2520个学生的成绩进行了综合评估与剖析。在12个证据因子中,传统命题写作、报刊网络阅读、英汉互译机译辅助、阅读理解客观题、在线听力测试这5项,最能体现学生的英语水平;师生交流和场景对话辨析难以测试出学生的真实英文水平;报刊网络阅读、英汉互译机译辅助、在线听力测试的权重在提升。实证结果表明:在后期的英语教学过程中,最需要提升的是学生英语录像听析和微型演讲能力。

At present,it is difficult to give a quantitative reflection of the true level and ability of students by using the rigid test evaluating method of the traditional college English curriculum evaluation system.The non-linea rstatis- tical method in Geo-science is introduced in th eprocess of college English achievement evaluation, and 12 evidence factors are refined in the comprehensive performance assessment of collegeEnglish such as listening, speaking,read- ing,writing and translating and so on,and the growth and decline trend of the factors are controlled by usin gan Evi- dence Weight Model and a comprehensive evaluation and analysis of 2520 students＇academic achievements are con- ducted with the aid of this model.The results show that in the 12 evi-dence factors, traditional writing,online reading of newspapers and periodicals,computer-aided translation,objective reading comprehension, and online listening test can best reflect the students＇English level;where-as, interaction between teachers and students, scene dialogue analysis fail to test the true English level of the students;the weight of online reading o fnewspapers and periodicals,com- puter-aided translation and online listening test is on the rise; in the later period o fEnglish teaching, what the students need mostis to improve their English hearing and speaking ability.