最后列举了一些英汉疑问句的特殊情况。如：回声问句和多个疑问词问句等。

Finally, special cases in English and Chinese wh-questions are provided here, such as echo questions and multiple wh-questions.

youdao

本文采用贝叶斯分类器，提取问句主干以及包含疑问词的分支作为特征进行问题分类。

Then we employ Bayesian classifier to classify these questions. Answer extraction is the most crucial part for question answering system.

youdao

本文采用贝叶斯分类器，提取问句主干以及包含疑问词的分支作为特征进行问题分类。

Then we employ Bayesian classifier to classify these questions. Answer extraction is the most crucial part for question answering system.

youdao