The Role of AI Personality in the Game Diplomacy

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Diplomacy is a board game created by Avalon Hill. Seven players play as leaders of the European countries: Austria, France, Russia, England, Germany, Italy and Turkey. It is impossible for a player to win the game on strict military power. Regardless of the country, every military unit is equal in strength.


The latest version, created by Paradox Interactive, is visually stunning but shackled with an inhuman AI. (Ocampo) This AI is superior to Paradox's. An AI with realistic personality traits is more effective at playing Diplomacy than the logical versions that excel at games like chess.
Video Game AI design began almost 50 years ago. Great AI victories, like IBM's Deep Blue defeating world chess champion Gary Kasparov in 1997, were the result of massively powerful computers out muscling their opponents. (Spice) These tactics won't work for PC and video games. Computers and game consoles greatly limit the computational resources available to programmers. A logic based AI makes the same move whenever the same situational parameters arise. A game AI needs more than logic to compete with gamers. A player's emotional state influences how he plays a game. If he is in a bad mood, he will be more aggressive in his actions in order to release tension and frustration. The next generation of computer AI need to include personality variables in its design. (Gambotto-Burke)
The Diplomacy AI's personality has 4 components: Emotional Temperament, Risk Attitudes, Aggressiveness and Contempt for Rules. For the two 50 game tests, these parameters had boolean operands. ...
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