Patent ID: 11941365
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. A model learning method for generating at least one of a learned translation model for obtaining an answer from a question and a learned reverse translation model for obtaining a question from an answer by using a model learning apparatus having a recording medium, and a processing circuitry, the model learning method including:
recording in advance, in the recording medium, a question/answer pair, which is a pair of a question and an answer, and the translation model for obtaining the answer from the question or the reverse translation model for obtaining the question from the answer;
a question/answer-pair expansion step of generating the expansion question/answer pair from the question/answer pair; and
a translation-model learning step of learning the translation model and the reverse translation model by using the expansion question/answer pair; wherein
the question/answer pair is associated with an index indicating a degree of how much the answer sounds like a character, which is determined in advance, for each of the question/answer pair; and
the question/answer-pair expansion step includes generating the expansion question/answer pair by increasing the number of the question/answer pair associated with the index indicating that the answer sounds more like the character.