汉英双语语料库中名词短语的自动对应

Noun Phrase Alignment in Chinese-English Bilingual Corpora

本文提出了一种在汉英双语语料库句子对齐的基础上,自动进行汉英名词短语划分和对应的方法。该方法的主要特点在于在无需严格识别汉语名词短语的情况下,对高频短语和低频短语分别进行处理,对于高频短语,利用英语短语和汉语词在双语语料库中的关联信息,采用一种迭代重估算法进行双语短语的对应;对于低频短语,根据双语词典中源词和译词之间的对应信息,结合一套人工编写的句法规则进行双语低频短语的对应。该方法能够从整体上把握对应信息,并具有很高的覆盖率。

In this paper, a method is proposed to align bilingual noun phrases automatically in sentencealigned ChineseEnglish bilingual corpus. The characteristic of our method is to deal with highfrequency noun phrases and lowfrequency noun phrases separately without recognizing Chinese noun phrase accurately. Highfrequency noun phrases in English corpus are aligned to those in Chinese corpus using an iterative reevaluation algorithm according to the cooccurrence between English phrases and Chinese words in bilingual corpora; Lowfrequency noun phrases are aligned using the manual rules and Dice coefficient which is based on EnglishChinese dictionary. This method can take into account the alignment information on the whole, and acquire the result with high coverage rate.