ANN Tool in MATLAB

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Durga
Durga on 11 Nov 2014
Commented: Durga on 19 Sep 2015
While using Neural network pattern recognition tool(nprtool) in matlab,(For classification after getting all features) first we have to give input data from the workspace as a database file and then it asks for target data defining the desired output. I can't understand that if,i give input the features_vector of an image,then from where can i get the target data_vector?I mean how to estimate the target_data for each feature..

Accepted Answer

Greg Heath
Greg Heath on 13 Nov 2014
If there are c classes or categories and N examples of I-dimensional inputs.
[ I N ] = size(input)
[ c N ] = size(target)
where the target matrix contains c-dimensional {0,1} unit vectors satisfying
sum(target) = ones(1,N)
vec2ind(target) = classindices
ind2vec(classindices) = target
Look at the target vectors of the classification data examples in
help nndatasets
doc nndatasets
Hope this helps.
Thank you for formally accepting my answer
Greg

More Answers (1)

Shoba Selvaraj
Shoba Selvaraj on 11 Sep 2015
In which form ANN receives a input?
  1 Comment
Durga
Durga on 19 Sep 2015
In a form of n-dimensional input vector database file.

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