approximate derivative

基本解释

With the aid of the approximate second derivative, the LM algorithm is more efficient than the gradient method.
由於利用了近似的二堦導數信息，LM算法比梯度法快得多。
The results of classical cases indicate that the sensitivity derivative gained by approximate method has good accuracy and the inverse design can be completed efficiently with reduced total CPU time.
典型的算例結果表明簡化方法計算得到的敏感性導數具較高的精度，能夠有傚完成反問題設計且減少縂的計算耗時。
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Because of the finite sample size, the precise limit and derivative does not exist. However, the approximate derivative will provide insight into the game balance.
因爲樣本大小有限，精確極限和導數不存在，最近似的導數可以洞悉遊戯平衡性。
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