Probability distribution of dependency distance
Probability distribution of dependency distance
复制标题
依赖距离的概率分布
作者：
Haitao Liu
本文研究了汉语依存关系树库中六个文本的依存距离的概率分布。拟合结果表明，右截尾Zeta分布能很好地描述所研究的分布.为了将模型仅限于自然语言，研究了两个随机生成调控器的样本。其中一个可以用Hyperpoisson分布描述，另一个满足Zeta分布。本文还对六个文本进行了三种分析（句法分析和两种随机分析）的序列图和平均依存距离的研究。在这三种分析中，句法分析具有最小（平均）依赖距离。
This paper investigates probability distributions of dependency distances in six texts ex- tracted from a Chinese dependency treebank. The fitting results reveal that the investigated distribu- tion can be well captured by the right truncated Zeta distribution. In order to restrict the model only to natural language, two samples with randomly generated governors are investigated. One of them can be described e.g. by the Hyperpoisson distribution, the other satisfies the Zeta distribution. The paper also presents a study on sequential plot and mean dependency distance of six texts with three analyses (syntactic, and two random). Of these three analyses, syntactic analysis has a minimum (mean) dependency distance.