SATISFACTION ESTIMATION MODEL ADAPTING APPARATUS, SATISFACTION ESTIMATING APPARATUS, METHODS THEREFOR, AND PROGRAM

1 . A satisfaction estimation model adaptation apparatus, comprising:

processing circuitry configured to:

store a satisfaction estimation model obtained by connecting a speech satisfaction estimation model part estimating a speech satisfaction for each speech using a feature amount of each speech as an input and a conversation satisfaction estimation model part estimating a conversation satisfaction using at least the speech satisfaction for each speech as an input;

store adaptation data including a conversation voice in which a conversation including a plurality of speeches is recorded and a correct value of a conversation satisfaction for the conversation; and

by using a feature amount of each speech extracted from the conversation voice and a correct value of the conversation satisfaction, fixe a parameter of the conversation satisfaction estimation model part to update a parameter of the speech satisfaction estimation model part.

2 . The satisfaction estimation model adaptation apparatus according to claim 1 , wherein

the satisfaction estimation model is learned using learning data including a conversation voice in which a conversation belonging to a plurality of domains is recorded, a correct value of a conversation satisfaction for the conversation, and a correct value of a speech satisfaction for each speech included in the conversation, and

the adaptation data includes conversation voice in which the conversation belonging to a domain not included in the plurality of domains is recorded, and the correct value of the conversation satisfaction for the conversation.

3 . A satisfaction estimation apparatus, comprising:

processing circuitry configured to:

store a satisfaction estimation model obtained by connecting a speech satisfaction estimation model part estimating a speech satisfaction for each speech using a feature amount of each speech as an input and a conversation satisfaction estimation model part estimating a conversation satisfaction using at least the speech satisfaction for each speech as an input; and

input a feature amount of each speech extracted from a conversation voice in which a conversation including a plurality of speeches is recorded to the satisfaction estimation model to estimate a speech satisfaction for each speech and a conversation satisfaction for the conversation, wherein

fix a parameter of the conversation satisfaction estimation model part to update a parameter of the speech satisfaction estimation model part using a feature amount of each speech extracted from a conversation voice in which a conversation including a plurality of speeches is recorded, and a correct value of a conversation satisfaction for the conversation.

4 . A satisfaction estimation model adaptation method, comprising:

storing, in processing circuitry, a satisfaction estimation model obtained by connecting a speech satisfaction estimation model part estimating a speech satisfaction for each speech using a feature amount of each speech as an input and a conversation satisfaction estimation model part estimating a conversation satisfaction using at least the speech satisfaction for each speech as an input;

storing, in the processing circuitry, adaptation data including a conversation voice in which a conversation including a plurality of speeches is recorded and a correct value of a conversation satisfaction for the conversation; and

by the processing circuitry, by using a feature amount of each speech extracted from the conversation voice and a correct value of the conversation satisfaction, fixing a parameter of the conversation satisfaction estimation model part to update a parameter of the speech satisfaction estimation model part.

5 . A satisfaction estimation method, comprising:

storing, in processing circuitry, a satisfaction estimation model obtained by connecting a speech satisfaction estimation model part estimating a speech satisfaction for each speech using a feature amount of each speech as an input and a conversation satisfaction estimation model part estimating a conversation satisfaction using at least the speech satisfaction for each speech as an input; and

inputting, by the processing circuitry, a feature amount of each speech extracted from a conversation voice in which a conversation including a plurality of speeches is recorded to the satisfaction estimation model to estimate a speech satisfaction for each speech and a conversation satisfaction for the conversation, wherein

the satisfaction estimation model fixes a parameter of the conversation satisfaction estimation model part to update a parameter of the speech satisfaction estimation model part using a feature amount of each speech extracted from a conversation voice in which a conversation including a plurality of speeches is recorded, and a correct value of a conversation satisfaction for the conversation.

6 . A non-transitory computer recording medium on which a program for causing a computer to operate as the satisfaction estimation model adaptation apparatus according to claim is recorded.

7 . A non-transitory computer recording medium on which a program for causing a computer to operate as the satisfaction estimation model adaptation apparatus according to claim 2 is recorded.

8 . A non-transitory computer recording medium on which a program for causing a computer to operate as the satisfaction estimation apparatus according to claim 3 is recorded.