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Chinese-Japanese Machine Translation Exploiting Chinese Characters

机译:汉日机器翻译开发汉字

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摘要

The Chinese and Japanese languages share Chinese characters. Since the Chinese characters in Japanese originated from ancient China, many common Chinese characters exist between these two languages. Since Chinese characters contain significant semantic information and common Chinese characters share the same meaning in the two languages, they can be quite useful in Chinese-Japanese machine translation (MT). We therefore propose a method for creating a Chinese character mapping table for Japanese, traditional Chinese, and simplified Chinese, with the aim of constructing a complete resource of common Chinese characters. Furthermore, we point out two main problems in Chinese word segmentation for Chinese-Japanese MT, namely, unknown words and word segmentation granularity, and propose an approach exploiting common Chinese characters to solve these problems. We also propose a statistical method for detecting other semantically equivalent Chinese characters other than the common ones and a method for exploiting shared Chinese characters in phrase alignment. Results of the experiments carried out on a state-of-the-art phrase-based statistical MT system and an example-based MT system show that our proposed approaches can improve MT performance significantly, thereby verifying the effectiveness of shared Chinese characters for Chinese-Japanese MT.
机译:中文和日语共享汉字。由于日语中的汉字起源于古代中国,因此这两种语言之间存在许多常见的汉字。由于汉字包含重要的语义信息,并且普通汉字在两种语言中具有相同的含义,因此它们在汉日机器翻译(MT)中非常有用。因此,我们提出了一种用于创建日语,繁体中文和简体中文的汉字映射表的方法,目的是构建完整的普通汉字资源。此外,我们指出了汉日MT的中文分词中的两个主要问题,即未知词和分词粒度,并提出了一种利用常见汉字来解决这些问题的方法。我们还提出了一种统计方法,用于检测除常见的汉字以外的其他语义等效的汉字,以及在短语对齐中利用共享汉字的方法。在最新的基于词组的统计MT系统和基于示例MT系统上进行的实验结果表明,我们提出的方法可以显着提高MT性能,从而验证了共享汉字对于汉字翻译的有效性。日本MT。

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