Extraction of Broad-Scale, High-Precision Japanese-English Parallel Translation Expressions Using Lexical Information and Rules
Qing Ma, Shinya Sakagami, Masaki Murata · Institutional Repositories DataBase (IRDB) · 2011
Extraction was attempted of broad-scale, high-precision Japanese-English parallel translation expressions from large aligned parallel corpora.To acquire broad-scale parallel translation expressions, a new method was used to extract single Japanese and English word n-grams, by which as many parallel translation expressions as possible could then be extracted.To achieve high extraction precision, first, hand-crafted rules were used to prune the unnecessary words often found in expressions extracted on the basis of word n-grams, and lexical information was used to refine the parallel translation expressions.Computer experiments with aligned parallel corpora consisting of about 280,000 pairs of Japanese-English parallel sentences found that more than 125,000 pairs of parallel translation expressions could be extracted with a precision of 0.96.These figures show that the proposed methods for extracting a broad range of parallel translation expressions have reached a level high enough for practical use.