Abstract
For the identification of a unknown author of a certain literature, it is significant to find the main elements of writing styles which characterize authors or distinguish them. It was previously known that the authors' writing styles are characterized in distributions fo lengths of words are categorized by parts of speech. This paper presents a quantitative analysis of the classification of sentences by word-length distribution of verbs, and the relationships between writing styles in word-length distribution of verbs and the proportions of Japanese words and Chinese words or those of compound words and non-compound words in verbs. This analysis shows that word-length distribution of verbs characterizes writing styles even where there are no differences in the proportions of Japanese words and Chinese words or those of compound words and non-compound words.
