Survey on Statistical Machine Translation
Qun Liu · Zhongwen xinxi xuebao · 2003
The paper gives a survey on three approaches of statistical machine translation and the evaluation methods used in SMT. The basic idea of parallel grammar based approach is to build parallel grammars for source and target languages, which conform the same probabilistic distribution. In the source-channel approach, the translation probability is expressed as a language model and a translation model. In the maximum entropy approach, the optimal translation is searched according to a linear combination of a series of real-valued feature functions. The source-channel approach can be regard as a special case of maximum entropy approach.