本文综述了基于信源信道思想和基于最大熵思想的统计机器翻译方法并介绍了统计机器翻译的评测方法。

The paper gives a survey on three approaches of statistical machine translation and the evaluation methods used in SMT.

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本文首先对统计机器翻译若干主要方法进行了研究和探讨，包括基于信源信道思想和基于最大熵思想的若干模型。

In this paper, some major methods of statistical machine translation are researched and discussed, including source-channel model and maximum entropy model.

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该文在分析了查询产生模型的基础上，提出了一种新的基于统计机器翻译的查询扩展方法。

On the basis of analyzing of process of producing query, this paper puts forward a new method of query expansion on the basis of model of statistical machine translation.

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