一个量或一个函数可取的最大值和最小值之间的差。
The difference between the highest and the lowest values that a quantity or function may take.
使用差分最大负平均信息量的方法，一个为ica的目标函数和一个快速ica算法在文中被提出。
Using maximum approximation of differential Negentropy, an objective function for ICA is introduced and a Fast-ICA algorithm based on maximum Negentropy is presented.
在求解迭代过程中，以残差变化量作为加速因子，修正权函数，减少了迭代次数，加快了算法的计算速度。
During the solution iterations, the residual change is used as accelerating factor to revise weight function. As a result, the number of iteration and the calculation time are decreased.
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