why target data is only binary in the pattern recognition (nnstart) ??

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[Image Analyst]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

Answer 1

[Greg Heath]

Because the desired output probabilities are 1 for the correct class and 0 for the incorrect classes.

Configured correctly, a successful classifier will output unit sum probability estimates with the correct class estimate being the largest.

Hope this helps.

Thank you for formally accepting my answer

Greg

[Omar Awad]

Thx you alot