The alternating conditional expectation transform may provide the optimal transform which can make a maximum correlation coefficient occurring between a random dependent variable and many random independent variables, and can effectively process the experimental data, thus raising the cor-relativity of regression curve. 交替条件期望(ACE)变换提供了一个随机因变量和多个随机自变量之间具有最大相关系数的最优变换,可对实验数据进行有效处理,提高回归曲线的相关系数。