Response generation device, dialog control system, and response generation method

A dialog control system, comprising:

• a processor;
• and
• a memory storing instructions which, when executed by the processor, causes the processor to perform processes of:
• for selecting a response template corresponding to a dialog state with a user from among response templates corresponding to predetermined dialog states and outputting a term symbol included in the selected response template;
• for referring to an estimation condition table in which a plurality of estimation conditions defined by the predetermined dialog states and weights assigned to the respective estimation conditions corresponding to comprehension of term symbols are associated with each other and a frequency table in which frequencies at which a function is executed in the respective estimation conditions and a term symbol corresponding to the function are associated with each other, specifying the frequencies and the weights of the respective estimation conditions of the function corresponding to the input term symbol, and outputting a result of magnitude determination of a score calculated from the specified frequencies and the weights as a user's comprehension level of the term symbol;
• for generating a response sentence in the dialog state with the user on a basis of the selected response template, adding an explanatory sentence to the response sentence depending on the user's comprehension level of the input term symbol, and outputting the response sentence;
• an input device to accept the dialog with the user;
• and
• an output device to present the output sentence to the user.

A response generation method, comprising:

• selecting a response template corresponding to a dialog state with a user from among response templates corresponding to predetermined dialog states;
• outputting a term symbol included in the selected response template;
• referring to an estimation condition table in which a plurality of estimation conditions defined by the predetermined dialog states and weights assigned to the respective estimation conditions corresponding to comprehension of term symbols are associated with each other and a frequency table in which frequencies at which a function is executed in the respective estimation conditions and a term symbol corresponding to the function are associated with each other;
• specifying the frequencies and the weights of the respective estimation conditions of the function corresponding to the input term symbol;
• outputting a result of magnitude determination of a score calculated from the specified frequencies and the weights as the user's comprehension level of the term symbol;
• generating a response sentence in the dialog state with the user on a basis of the selected response template;
• adding an explanatory sentence to the response sentence depending on a user's comprehension level of the input term symbol;
• and
• outputting the response sentence.