Dialogue method, dialogue system, dialogue apparatus and program
It is an object of the present invention to prevent inattentive listening to a dialogue of an agent without taking it seriously and to make it easier to understand the dialogue with the agent. A dialogue system 100 conducts a dialogue with a user 101 . A humanoid robot 50 - 1 presents a leap-in-logic utterance, which is an utterance, of which a logical structure is partially missing. The user 101 expresses a confirmation action which is an action confirming the missing information in the leap-in-logic utterance. The humanoid robot 50 - 1 presents a supplementary utterance which is an utterance describing the missing information.
1. A dialogue method executed by a dialogue system that conducts a dialogue with a user, the method comprising:
an utterance decision step in which, from contents of an utterance of a sentence structure made up of a premise, an interpretation and a conclusion decided by a predetermined procedure, an utterance decision part of the dialogue system generates a leap-in-logic utterance which is an utterance missing partially information of the premise, the interpretation and the conclusion in the sentence structure of the contents of the utterance;
an utterance presentation step in which a presentation part of the dialogue system presents the leap-in-logic utterance;
a confirmation receiving step in which an input part of the dialogue system receives a user action after the leap-in-logic utterance is presented; and
a supplementary presentation step in which where the user action is a confirmation action which is an action to confirm information missing in the leap-in-logic utterance, the presentation part of the dialogue system presents a supplementary utterance which is an utterance describing the missing information.
2. The dialogue method according to claim 1 , further comprising:
a confirmation presentation step in which when the user action is not a confirmation action, the presentation part of the dialogue system presents an utterance confirming information missing in the leap-in-logic utterance.
3. The dialogue method according to claim 1 , wherein the leap-in-logic utterance is an utterance which is an utterance with a second topic which is a topic less relevant to the topic of the dialogue made before the leap-in-logic utterance and in which at least one of words representing the second topic is not included.
4. The dialogue method according to claim 1 , wherein the leap-in-logic utterance is an utterance with a topic less relevant to the topic of the dialogue made before the leap-in-logic utterance and which is an utterance, at a beginning of which a topic transition word indicating that a topic is changed is added.
5. The dialogue method according to claim 1 , wherein the supplementary utterance is an utterance including a question with contents with which the user can easily agree regarding the missing information.
6. A non-transitory computer-readable recording medium having a program recorded thereon for causing a computer to execute each step of the dialogue method according to claim 1 .
7. A dialogue system that conducts a dialogue with a user, the dialogue system comprising processing circuitry configured to:
decide contents of an utterance of a sentence structure made up of a premise, an interpretation and a conclusion by a predetermined procedure;
generate a leap-in-logic utterance which is an utterance missing partially information of the premise, the interpretation and the conclusion in the sentence structure of the contents of the utterance;
present the leap-in-logic utterance;
decide a supplementary utterance which is an utterance describing information missing in the leap-in-logic utterance;
present the leap-in-logic utterance;
receive a user action after the leap-in-logic utterance is presented; and
present the supplementary utterance where the user action is a confirmation action which is an action for confirming the information missing in the leap-in-logic utterance.
8. A dialogue apparatus that decides an utterance presented by a dialogue system comprising at least a presentation part that presents an utterance and an input part receives a user action, the dialogue apparatus comprising processing circuitry configured to:
decide contents of an utterance of a sentence structure made up of a premise, an interpretation and a conclusion by a predetermined procedure;
generate a leap-in-logic utterance which is an utterance missing partially information of the premise, the interpretation and the conclusion in the sentence structure of the contents of the utterance;
and
decide a supplementary utterance which is an utterance describing information missing in the leap-in-logic utterance, where the supplementary utterance be presented where the user action presented after the leap-in-logic utterance is an action for confirming the information missing in the leap-in-logic utterance.
9. A non-transitory computer-readable recording medium having a program recorded thereon for causing a computer to function as the dialogue apparatus according to claim 8 .