PARALLEL TRANSLATION SENTENCE EXTRACTION DEVICE, PARALLEL TRANSLATION SENTENCE EXTRACTION METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To create a parallel translation corpus of which quality is higher than the quality in association of two sentences by using a general dictionary.SOLUTION: A parallel translation sentence acquisition part of a parallel translation sentence extraction device acquires a parallel translation sentence by matching a sentence in a first language and a sentence in a second language structuring a parallel translation document by using a parallel translation dictionary. A word alignment score calculation part calculates a word alignment score showing the probability that each word in the first language structuring the acquired parallel translation sentence matches one word in the second language structuring the parallel translation sentence. A parallel translation word extraction part adds a pair of a word whose calculated word alignment score is higher than a threshold or the greatest among the words in the first language and the one word in the second language to the parallel translation dictionary as a parallel translation word. A parallel translation sentence acquisition part acquires a parallel translation sentence by matching the sentence in the first language and the sentence in the second language structuring the parallel translation document by using the parallel translation dictionary to which the parallel translation word is added.SELECTED DRAWING: Figure 1