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

Claim 3:
4. A model learning apparatus 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, the model learning apparatus comprising:
a recording medium recording a question/answer pair, which is a pair of a question and an answer, an expansion question/answer pair, and the translation model for obtaining the answer from the question and the reverse translation model for obtaining the question from the answer; and
processing circuitry configured to:
execute a question/answer-pair expansion processing which generates the expansion question/answer pair from the question/answer pair; and
execute a translation-model learning processing which learns at least one of 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
execute the question/answer-pair expansion processing which generates 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.