关键词: 多词表达, 互信息, 对数似然比, 卡方, 维吾尔语

Abstract: Multi word expression is a special language phenomenon, which is combination of words. As a block of meaning, multi word expression appears together more often than by chance. They play more important role in natural language processing applications. In this study, it explores the effect of three more used statistical methods on extracting multi word expression in Uyghur texts. The three methods contain mutual information, log-likelihood and chi-square. According to the characteristics of Uighur, it adds stemmed form of words as features of extraction methods. On the choosing corpus, it considers the coverage and field, and explores its effect on extraction methods.

Key words: collocation, mutual information, log-likelihood, chi-square, Uyghur