www.gusucode.com > stats 源码程序 matlab案例代码 > stats/ViewTreeFromBagOfTreesRegExample.m
%% View Tree from Bag of Trees %% % Load the |carsmall| data set. Consider a model that explains a car's % fuel economy (|MPG|) using its weight (|Weight|) and number of cylinders % (|Cylinders|). load carsmall X = [Weight Cylinders]; Y = MPG; %% % Grow a bag of 100 regression trees using all measurements. rng(1) % For reproducibility Mdl = TreeBagger(100,X,Y); %% % Alternatively, you can use <docid:stats_ug.bu_gvq1 fitensemble> to grow a % bag of regression trees. %% % |Mdl| is a <docid:stats_ug.brz_iy1-1 |TreeBagger|> model object. % |Mdl.Trees| stores the bag of 100 trained regression trees in a % 100-by-1 cell array. That is, each cell in |Mdl.Trees| contains a % |CompactRegressionTree| model object. %% % View a graph of the 10th regression tree in the bag. Tree10 = Mdl.Trees{10}; view(Tree10,'Mode','graph'); %% % By default, the software grows deep trees for bags of trees.