先秦词汇的时代特征自动获取及文献时代的自动判定

The Automatic Acquisition of Pre-Qin Word's Property of Times and The Automatic Classification of Document's Times

词汇的时代特征能反应词汇在一个时代发展变化的规律。该文将先秦分为前春秋、春秋和战国三个时代,获取并研究这三个时代的时代独有词、时代特征词及时代发源词。该文提出两种自动判断先秦文献时代的方法,分别基于向量相似度和朴素贝叶斯分类器,在25种先秦文献上后者的分类性能更稳定。最后该文使用朴素贝叶斯分类器验证了《列子》并非成书于先秦。

Words’ property of times shows rules of how a word changes in a particular times.We divide the Pre-Qin times into three parts as Pre-Chunqiu,Chunqiu and Zhanguo.We find out and focus on three kinds of words which are only in a times,popular in a times and arised in a times.We also propose methods using VSM and Naive Bayes Classifier to decide the times of a text with which we experiment on 25texts of Pre-Qin.The latter one’s result turn out much better.With the same method we verified that Lie Zi is not written in Pre-Qin.