Choice of ADPCM's step-size updating factors m had a sea capacity of computing which optimizes multi-variables with complex cost function.
选择adpcm的步长修正因子M涉及复杂目标函数的多变量优化，是一个海量计算问题。
The feasible direction method and the complex method are used in the optimal design of dam section, with the same design variables and the objective function. They led to the same result.
大坝断面优化采用可行方向法和复合形法，在设计变量、目标函数相同的条件下，二种方法取得了几乎完全一致的结果。
Sensitivities of an objective function with respect to design variables are evaluated using the complex-variable method in the present paper, which are used in the process of optimal design.
应用复变量方法计算目标函数关于设计变量的灵敏度，以此进行优化设计。
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