以語文特徵為基之中學閱讀測驗短文分級 (Using Linguistic Features to Classify Texts for Reading Comprehension Tests at the High School Levels) [In Chinese]

We investigate the issue of classifying short essays based their linguistic issues, for English at the high school levels. A good selection of appropriate essays is crucial for the language learners and for the reading comprehension tests, which is an important type of tests for language competence examinations. Although the text alone does not allow us to judge the difficulty of reading comprehension tests, the capability to identify the levels of high school students for whom the texts were used in the reading comprehension can be an important step toward computer assisted selection of reading comprehension test items. We employed word-level statistics, sentence-level statistics, and syntactic-level information of the text, and applied several machine learning techniques for this text classification problem. Experimental results show that, with the best performing combination of features and learning method, we achieved 53.6% in accuracy. 關鍵字:電腦輔助語文教學、可讀性分級、文件分類、閱讀測驗文本分析