You can't. Factorial experiment refers to the experiment or experiment that deals with the horizontal combination of all or some factors, investigates the main effect and necessary interaction effect of factors, and investigates the influence of some factors on the target variable. Mathematical model method is a method that uses the relationship between symbols and functions to define evaluation objectives and content systems, and expresses the relationship between them through mathematical formulas. Factorial experiment and mathematical model method are two different concepts, and factorial experiment is not a mathematical model method.