Among them the so-called "Precise log DMO"method is supposed to be the idealest, since it integrates the fcaturcs of the rapidity of "stretching method" in implementation and the nearly identical results given by "Hale method" as well as the cxclusion of shallow layers distortion inheret in the "strctching method ".

The precise and approximate algorithms solving 0-1 knapsack problem,precise algorithm could not be used to solve 0-1 knapsack problem in a short time,so it could not be applied extensively.

It combines the neural network and fuzzy control,and is essentially a fuzzy control system in which the fuzzy control rule was expressed by neural network,the control inference is based on the precise value method of fuzzy inference and the back- propagation algorithm was used for the neural network.