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汉英短语翻译对的自动抽取

Computer Applications and Software(2012)

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Abstract
介绍从平行语料库中如何抽取双语短语翻译对。首先用统计模型正则期望从汉语专利语料库中抽取汉语短语。抽取的短语利用统计知识和语言学知识来过滤,使得过滤后汉语短语的正确率较高;其次,利用词对齐工具Giza++从汉英平行语料库中抽取词汇对齐,在词汇对齐的基础上利用开源工具Moses抽取汉英短语对齐,根据短语对齐与抽取出的高质量汉语短语的交集来抽取候选的汉英互译的源语言短语;接着使用停用词、对数似然估计法LLR和上下文熵来对英语短语翻译进行过滤。实验结果表明,过滤后,抽取的汉语短语准确率为97.6%,汉英短语翻译对的准确率为92.4%。
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