Controlling a massively multiplayer online role-playing game

1. A system to control a massively multiplayer online role-playing game (MMORPG), the system comprising:

a processor configured to execute instructions in communication with a memory that stores the instructions to provide:

a user-interface (UI) selection unit configured to allow a user to select a UI in a user's device; and

an action log unit configured to record logs of inputs for user's actions through the UI, the user's actions being associated with status information of a user character and opponent characters;

a pattern detector unit configured to:

extract correlation rules for the status information and the associated user's actions recorded in the logs,

calculate frequencies of occurrence of all user's action combinations, and

select co-occurrence patterns that have frequencies which exceed a predetermined threshold as action patterns that have high probabilities of co-occurrence; and

an artificial intelligence (AI) player unit configured to control a substitute player for the user based on the correlation rules and the selected co-occurrence patterns, such that the substitute player automatically reproduces actions of the user.

2. The system of claim 1 , wherein the UI selection unit is further configured to report the user's actions to the action log unit if the user has selected a native UI.

3. The system of claim 2 , wherein the native UI comprises at least one of a native UI for a game console and a native UI for a mobile device.

4. The system of claim 1 , wherein the UI selection unit is further configured to request the AI player unit to construct the substitute player if the user has selected a non-native UI.

5. The system of claim 4 , wherein the non-native UI comprises at least one of a web-based UI and a mail-based UI.

6. The system of claim 1 , wherein the status information includes at least one of: power and skill levels, current life, and armors possessed by the user character and the opponent characters.

7. The system of claim 1 , wherein the pattern detector unit is configured to extract the correlation rules according to an Apriori algorithm.

8. A method to control a massively multiplayer online role-playing game (MMORPG), the method comprising:

selecting, by a user-interface (UI) selection unit, a UI in a user's device;

recording, by an action log unit, logs of inputs for user's actions through the UI, the user's actions being associated with status information of a user character and opponent characters;

extracting, by a pattern detector unit, correlation rules for the status information and the associated user's actions recorded in the logs;

calculating, by the pattern detector unit, frequencies of occurrence of all user's action combinations;

selecting, by the pattern detector unit, co-occurrence patterns that have frequencies which exceed a predetermined threshold as action patterns that have high probabilities of co-occurrence; and

controlling, by an artificial intelligence (AI) player unit, a substitute player for the user based on the correlation rules and the selected co-occurrence patterns, such that the substitute player automatically reproduces actions of the user.

9. The method of claim 8 , wherein the selecting the UI comprises reporting the user's actions to the action log unit if the user has selected a native UI.

10. The method of claim 9 , wherein the selecting the UI comprises selecting at least one of a native UI for a game console and a native UI for a mobile device.

11. The method of claim 8 , wherein the selecting the UI comprises requesting the AI player unit to construct the substitute player if the user has selected a non-native UI.

12. The method of claim 11 , wherein the selecting the UI comprises selecting at least one of a web-based UI and a mail-based UI.

13. The method of claim 8 , wherein the extracting the correlation rules comprises extracting the correlation rules according to an Apriori algorithm.

14. A non-transitory computer-readable storage medium which stores a program to cause a processor configured to control a massively multiplayer online role-playing game (MMORPG), the program comprising one or more instructions for:

selecting, by a user-interface (UI) selection unit, a UI in a user's device;

recording, by an action log unit, logs of inputs for user's actions through the UI, the user's actions being associated with status information of a user character and opponent characters;

extracting, by a pattern detector unit, correlation rules for the status information and the associated user's actions recorded in the logs;

calculating, by the pattern detector unit, frequencies of occurrence of all user's action combinations;

selecting, by the pattern detector unit, co-occurrence patterns that have frequencies which exceed a predetermined threshold as action patterns that have high probabilities of co-occurrence; and

controlling, by an artificial intelligence (AI) player unit, a substitute player for the user based on the correlation rules and the selected co-occurrence patterns, such that the substitute player automatically reproduces actions of the user.

15. The medium of claim 14 , wherein the selecting the UI comprises reporting the user's actions to the action log unit if the user has selected a native UI.

16. The medium of claim 15 , wherein the selecting the UI comprises selecting at least one of a native UI for a game console and a native UI for a mobile device.

17. The medium of claim 14 , wherein the selecting the UI comprises requesting the AI player unit to construct the substitute player if the user has selected a non-native UI.

18. The medium of claim 17 , wherein the selecting the UI comprises selecting at least one of a web-based UI and a mail-based UI.

19. The medium of claim 14 , wherein the extracting the correlation rules comprises extracting the correlation rules according to an Apriori algorithm.