以“字”为单位的汉语平均句长与句长分布研究

The Mean Length and Distribution of Sentence in Chinese Characters

"字"是汉语句子长度测量的可靠单位,通过对120万字汉语本族语者语料中的所有句子进行切分、统计,发现汉语以"字"为单位的句长分布范围为1-63个字,平均句长为10.91个字,最高频句长区间为6-8个字,最常用区间为2-15个字。汉语句子在所有句长上呈"长尾"分布,在高频区间上呈正态分布。1-30个字句长句子的"字"、"词"匹配和各区间句子的频次分布有其内在规律。

This paper analyzes the mean length and distribution of sentence in Chinese native speakers＇ language materials amount to 1,200,000 Chinese characters. It reveals that the range of Chinese sentence length is 1-63 characters, and the mean lengthof sentence is 10. 91 characters. The range of the most high-frequently used sentences length is 6-8 characters, and the most commonly used length is 2-15 characters. Chinese sentence length presents a ＂ long tail＂ distribution in all intervals, and a normal distributionin high frequency intervals. The ＂character-word＂ matching of 1-30 characters sentences and the frequency distribution of sentencesin different intervals have their own regularities.