Research and Design of Computer-Aided English Textbook Evaluation System

To break through the traditional one-sided qualitative evaluation of English textbook, the authors put forward a new model of evaluation system which includes three parts: teacherpsilas evaluation, studentpsilas evaluation, and the objective evaluation based on the corpus linguistics. By the analysis of evaluation theory of English textbook, 70 evaluation criteria are set out of 127 items using Delphi method. The proposed fuzzy analytic hierarchy process (AHP) is applied to eliminate subjective elements in weighting the evaluation criteria based on expertspsila knowledge and subjective judgments of textbook users. . The statistic data for objective evaluation criteria are obtained by using computer software to analyze the material in English textbook corpus. The quantitative analysis based on these data makes the evaluation results more objective and veracity. A detailed case study, illustrating the application of the proposed evaluation system to College English textbook evaluation is given.