www.gusucode.com > stats 源码程序 matlab案例代码 > stats/ComputeTheInSampleMSEExample.m
%% Compute the In-Sample MSE %% % Load the |carsmall| data set. Consider |Displacement|, % |Horsepower|, and |Weight| as predictors of the response |MPG|. % Copyright 2015 The MathWorks, Inc. load carsmall X = [Displacement Horsepower Weight]; %% % Grow a regression tree using all observations. tree = fitrtree(X,MPG); %% % Estimate the in-sample MSE. L = loss(tree,X,MPG)