| In today’s era,people are affected by the update and development of information and technology.The life demand has been more complicated,unstable and diversified.On the other hand,since the influence of reaction of consumer and competitors,they may make the strategy decision under the fuzzy market environment.In this research,based on fuzzy mathematics,game theory and decision-making theory of enterprise competitive strategy,the game models with fuzzy key factor were developed.Furthermore,the phenomena of decision-making of enterprise competitive strategy were analyzed.Finally,offer some advices to the enterprise based on fuzzy market competition.First,based on fuzzy market capacity,a Cournot model with fuzzy market capacity in the same interval was developed and analyzed the problem of excess profit of enterprises.Through developing the estimation function with fuzzy market capacity,enterprises estimate the fuzzy market capacity using their optimistic coefficient respective,and make the decision of quantity based on their bounded rationality.For the model,the new one extended the number of equilibrium point and the conventional Cournot equilibrium was a particular one on it.For the real quantity competition,the enterprise which want to obtain the excess profit should has higher market capacity estimation and more confident with its own products.Second,based on fuzzy market capacity,a Cournot model with fuzzy market capacity in the different interval was developed and analyzed the strategy and opportunity of market entry and exit of enterprises.This model improved the Cournot model with fuzzy market capacity in the same interval and assumed that for the enterprises,the range of fuzzy market capacity may be different.Before estimating and making decision,enterprises should confirm their own fuzzy market capacity intervals respectively.Analyzed the fuzzy market capacity reaction function and found that new entrants should make a good survey on the fuzzy market capacity and incumbent’s strength;from another side,the incumbent who in quantity disadvantage should keep pace with the market leader and maintain quality;Enterprises should keep innovating on their product and service in order to enlarging the market capacity.Third,based on fuzzy market capacity,a Bertrand model with fuzzy market capacity was developed and give the new explanation on Bertrand paradox.The process of price competition and its Nash equilibrium were discussed,it is found that under the environment of fuzzy market capacity,for the enterprise,the pricing is higher than marginal cost and the profits may be different.Therefore,the Bertrand paradox was explained by the perspective of fuzzy market capacity.In the meantime,some advices were suggested in order to avoid the excessive competition. |