How to have multiple targets in a neural network?

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Hello,
I have a question, if I had multiple outputs for a pattern recognition neural network (as in I have 3 different targets, one indicates size, one indicates direction, one indicates angles)(and I have 8 features and 86 samples for input), I want to train them at the same time using one neural network instead on training each target one by one, how would I do that? If I use the toolbox it allows the entry of only one target. Is there a simple way to do this? Doesn't matter if it is in code or toolbox.
Thank you. :)

Accepted Answer

Greg Heath
Greg Heath on 29 Nov 2014
For N examples of O outputs corresponding to N examples of I inputs
[I N ] = size(input)
[O N ] = size(target)
However, patternnet was designed to represent classes using {0,1} unit target vectors. So, unless you have discrete classes, use regression with fitnet.
Hope this helps.
Thank you for formally accepting my answer
Greg
  4 Comments
Greg Heath
Greg Heath on 12 Feb 2017
You mean calculate the outputs. The answer is no.
The weights can be configured in many different ways depending on weight initialization. In general, there is no obvious relationship between the 3 target weights and the 2 or 1 target weight... or if 1 or 2 targets are identically zero.
Hope this helps.
Greg
Royi Avital
Royi Avital on 24 Mar 2017
I think one should understand that the Net Object is updated according to the data on the configuration phase before the train test using `configure(hNetModel, mX, mT)`.

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