To reduce huge computation of the traditional stochastic optimization methods for engineering optimization, approximation model methods with acceptable accuracy for engineering design are developed based on the statistical theory.

• 摘要针对在工程中完全采用随机类优化方法寻优时计算量过大的问题，应用统计学的方法发展了计算量小、在一定程度上可以保证设计准确性的近似模型方法。