APPARATUS, METHOD AND PROGRAM FOR PERFORMING MACHINE-TRANSLATINON OF SOURCE LANGUAGE SENTENCE INTO OBJECT LANGUAGE SENTENCE

摘要

PROBLEM TO BE SOLVED: To provide a machine translation apparatus capable of improving the translation accuracy of a translation method based on examples.

SOLUTION: The machine translation apparatus is provided with: a receiving part 101 for receiving an input sentence based on a source language; an example translation part 102 for finding out an example translation candidate obtained by translating the input sentence into an object language and first likelihood expressing the probability of the example translation candidate on the basis of examples of the object language corresponding to examples of the source language coincident with or similar to the input sentence; a creation part 103 for translating the input sentence into the object language by processing different from the processing of the example translation part 102 and creating a translated word candidate expressing a candidate whose second likelihood is a first threshold and more out of translation result candidates corresponding to each word in the input sentence; a change part 105a for reducing the first likelihood only by a prescribed value when a translated word included in each example translation candidate does not exist in the translated word candidates; and a selection part 105b for selecting the example translated word candidate whose first likelihood is maximum from the example translated word candidates.

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