Problem with the TreeBagger Command

Hi,

I am using the TreeBagger command to produce the random forest regression model. My syntax is like the following:

Mdl=TreeBagger(1000,Training_Input,Training_Output,'Method','regression')

My Training_Input data is a matrix of 6768X400 and my Training_Output is a matrix of 6768X998

But while trying to execute I am getting the following error:

Error using classreg.learning.regr.FullRegressionModel.prepareData (line 245)

Invalid data type. Response must be a double or single vector.

Error in TreeBagger/init (line 1346)

classreg.learning.regr.FullRegressionModel.prepareData(...

Error in TreeBagger (line 616)

bagger = init(bagger,X,Y,makeArgs{:});

Error in Neural_network_OPF (line 71)

Mdl=TreeBagger(1000,Training_Input,double(Training_Output),'Method','regression');

I have checked the line inside the FullRegressionModel.m where the error is stemming from, it resulted from a check whether my response variable is vector or float.

I am really confused why this error is popping up. Can anyone help me fix it?

Regards,

Jubeyer

Answer 1

[Ridwan Alam]

The Training_Output variable has to be a vector of size 6768X1 instead of a matrix.

Answer 2

[Greg Heath]

The sizes of the input function and output target must be

[ I N ] = size(input)

[ O N ] = size (target)

Hope this helps,

Greg