The application comprises a processor implemented method of updating sentence generation model and sentence generating apparatus and includes: generating a target sentence corresponding to a source sentence using a first decoding model; calculating reward information associated with the target sentence using a second decoding model configured to generate a sentence in a word order different from a word order of the sentence generated by the first decoding model; and generating an updated sentence generation model by resetting a weight of respective nodes in the first decoding model based on the calculated reward information.
METHOD OF UPDATING SENTENCE GENERATION MODEL AND SENTENCE GENERATING APPARATUS