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The stochastic Eigen model proposed by Feng et al. (2007) (Journal of Theoretical Biology, 246, 28) showed that error threshold is no longer a phase transition point but a crossover region whose width depends on the strength of the random fluctuation in an environment. The underlying cause of this phenomenon has not yet been well examined. In this article, we adopt a single peak Gaussian distributed...
Based on VaR this paper puts forward the concept of RaR(return rate at risk) and analyses the result of RaR under the two common distributions to draw a conclusion that the relation of RaR, expected return rate and risk is linear. Found on that, the paper advances a new investment decision-making method. The study discovers that method can substitute the traditional utility function. Finally, we test...
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