Vehicle having dialogue system and control method thereof

1. A vehicle comprising:

an input processor configured to receive a speech of a user and convert the received speech into a text-type utterance;

a natural language processor configured to:

perform morpheme analysis on the text-type utterance,

identify an intent of the user, and

select a domain related to the text-type utterance based on a result of the morpheme analysis;

a storage configured to store a plurality of domains;

a controller configured to add a new domain to the plurality of domains, and to determine a final domain among domains of the plurality of domains and the added new domain; and

a result processor configured to generate a command based on the determined final domain.

2. The vehicle of claim 1 , wherein the controller is configured to add the new domain based on an adding condition including a period time and the number of searches, and to select the new domain when searched more than a predetermined number of times during the period time.

3. The vehicle of claim 1 , wherein the controller is configured to delete the new domain upon sensing that a condition to keep the new domain is relieved.

4. The vehicle of claim 1 , wherein the controller is configured to add the new domain when a location of the vehicle is within a predetermined area.

5. The vehicle of claim 4 , wherein the new domain includes a keyword frequently searched more than a predetermined number of times within the predetermined area.

6. The vehicle of claim 1 , wherein the controller is configured to add the new domain based on a certain time zone, and when the new domain is searched more than a certain number of times during the certain time zone.

7. The vehicle of claim 1 , wherein the controller is configured to cluster at least one keyword that is used by the user more than a predetermined number of times into an event domain, and

the storage is configured to store the event domain.

8. The vehicle of claim 7 , wherein the controller, upon sensing turn-on of ignition of the vehicle, is configured to determine the domain such that the event domain is prioritized over the plurality of domains.

9. The vehicle of claim 7 , wherein the controller, when a destination of the vehicle is input to a navigation system of the vehicle, is configured to determine the final domain such that the new domain related to information about a road to be travelled and information about the destination is prioritized over the event domain.

10. The vehicle of claim 7 , wherein the controller, upon elapse of a period time, is configured to determine the final domain such that a new domain related to an event corresponding to a date is prioritized over the event domain, based on information about the date.

11. The vehicle of claim 1 , further comprising a communicator configured to provide the new domain by communicating with an external server when a domain corresponding to the intent of the user is not found.

12. A method of controlling a dialogue system, the method comprising:

receiving, by an input processor, a speech of a user and converting the received speech into a text-type utterance;

performing, by a natural language processor, morpheme analysis on the text-type utterance, and identifying an intent of the user and determining a domain corresponding to the intent of the user based on a result of the morpheme analysis;

adding, by a controller, a new domain to a plurality of pre-stored domains, and determining a final domain among pre-stored domains of the plurality of pre-stored domains and the added new domain; and

generating, by a result processor, a command based on the determined final domain.

13. The method of claim 12 , wherein determining the domain corresponding to the intent of the user includes:

selecting the new domain when the text-type utterance is searched more than a predetermined number of times during a predetermined period of time.

14. The method of claim 12 , wherein determining the final domain includes:

deleting the new domain upon sensing that a condition to keep the new domain is relieved.

15. The method of claim 12 , wherein determining the final domain includes:

adding the new domain to the plurality of pre-stored domains when a location of a vehicle is within a predetermined area.

16. The method of claim 13 , wherein determining the final domain includes:

selecting the new domain including a keyword frequently searched more than a predetermined number of times within the predetermined area.

17. The method of claim 12 , wherein determining of the final domain includes:

selecting the new domain that is searched more than a certain number of times during a certain time zone.

18. The method of claim 12 , wherein determining the final domain includes:

clustering at least one keyword that is used by the user more than a predetermined number of times into an event domain, and storing the event domain.

19. The method of claim 18 , wherein determining the final domain corresponding to the intent of the user includes:

determining the final domain such that the event domain is prioritized over the plurality of pre-stored domains upon sensing turn-on of ignition of a vehicle.

20. The method of claim 18 , wherein determining the final domain includes:

determining the final domain such that the new domain related to information about a road to be travelled and information about a destination is prioritized over the event domain, when the destination is input to a navigation system of a vehicle.

21. The method of claim 18 , wherein determining the final domain includes:

upon elapse of a period time, determining the final domain such that the new domain related to an event corresponding to a date is prioritized over the event domain, based on information about the date.

22. The method of claim 12 , further comprising:

providing, by a communicator, the new domain by communicating with an external server when the domain corresponding to the intent of the user is not found.