OkaPU's Japanese-to-English Translator for NTCIR-10 PatentMT

This paper describes Okayama Prefectural University’s system for NTCIR-10 PatentMT JE task. It is a variant of the REV method proposed by Katz-Brown and Collins [KBC08] which obtained the best human evaluation score among Statistical Machine Translation systems at NTCIR-7 [FUYU08]. Their REV method preorders Japanese sentences without syntactic parsing. They split each Japanese sentence into segments at punctuations and the Japanese topic marker “wa”. Then, they reversed words in each segment and concatenated the reversed segments into one. For NTCIR-10, we tried to improve the REV method by keeping Japanese word order in noun phrases and coordinations.