edit-error in classifier

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FIR
FIR 2012-4-12
I have a code
load('fisheriris');
y = species;
X = meas;
cp = cvpartition(y,'k',10); % Stratified cross-validation
classf = TreeBagger(10,meas,species,'oobpred','on');
cvMCR = crossval('mcr',X,y,'predfun',classf,'partition',cp)
i get error as
Undefined function 'func2str' for input arguments of type 'TreeBagger'.
Error in crossval>evalFun (line 465)
error(message('stats:crossval:FunError', func2str( fun ), ME.message));

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采纳的回答

Ilya
Ilya 2012-4-12
Quoting http://www.mathworks.com/matlabcentral/answers/34771-classifier
In particular, 2nd example for crossval here http://www.mathworks.com/help/toolbox/stats/crossval.html shows what you need to do. You would need to replace the function handle classf in that example with a function which has two lines of code in it: 1) Train a TreeBagger on Xtrain and Ytrain, and 2) Predict labels for Xtest using the trained TreeBagger.

更多回答（1 个）

Walter Roberson
Walter Roberson 2012-4-12
The 'predfun' parameter expects a function handle as the associated value. Instead you passed in a TreeBagger object.

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