# mixed strategy

(redirected from Mixed strategies)

## mixed strategy

(mathematics)
A method of playing a matrix game in which the player attaches a probability weight to each of the possible options, the probability weights being nonnegative numbers whose sum is unity, and then operates a chance device that chooses among the options with probabilities equal to the corresponding weights.
(statistics)
A concept in game theory which allows a player more than one choice of action which is determined by a chance mechanism.
References in periodicals archive ?
alpha]]] subset, eliminating the defect probability (though not the partial defect equilibria) from the mixed strategies of both types of DMs.
Caption: Figure 5: Equilibrium mixed strategies for the partially observable case when R = 5, [[mu].
Nash (1950b) also extended the strategy space from pure to mixed strategies, and used the von Neumann-Morgenstern utility function instead of monetary payoffs.
Mixed strategies in game theory models have been used to model various types of competitive behavior, such as the bidding in an auction, tax cheating and auditing, and terrorist strikes and prevention.
However, a study conducted by Dess and Davis (1984) among American companies in the paint industry found that companies with single strategies showed better results than those with mixed strategies.
We build linear programming problems of maximum and minimum to determine the optimal mixed strategies of the two players.
The Existence of Economic Equilibria: Continuity and Mixed Strategies.
The above means that in each finished two-person game, there is a pair of optimum mixed strategies (p*, q*) representing the saddle point of game [GAMMA]m.
Since the number of edges in the graph is exponentially fewer than the number of paths, the marginal strategies are a much more compact representation of mixed strategies.
2) Erev, Bereby-Meyer, and Roth (1999) examined behavior in two versions of a repeated 2 x 2 constant-sum stage game with a unique Nash equilibrium in mixed strategies.
While Byrne probes personal matters (alcoholism, financial and marital issues) insightfully, his grasp on science is shaky; descriptions of mixed strategies in game theory, entropy and various quantum concepts are vague, muddled or misleading.
The price competition in the second period is in mixed strategies.

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