本文就熵函数法中的几个问题进行了讨论。首先,就该方法中涉及的指数计算溢出问题,给出了可以完全避免计算机溢出的等价变换。接着就两个光滑函数φ(x)与φp(x,u)的不同特点进行了详细分析,并指出了不正确使用可能陷人的计算误区,藉以纠正文献中将二者混为一谈的错误。
Some arguments about the entropic method are given in this paper. Firstly, an equivalent transformation to avoid the overflow of exponential calculation in the entropic method is given. Then a detailed analysis of the differences between the two smoothing functions φ(x) and φp(x,u) is presented, in order to avoid the confusion between these two functions. Based on the analysis the potential mistakes that are caused by the misuses are proposed.