divide function in trainbr train function

hello I have made a feedforward neural network. when I set the net.trainFcn to trainbr, and the divide function to divideblock or dividerand with train/val/test ratio of 70/0/30 after training the network, the devideFcn in the training result is set to dividetrain and all of the input data is used for training, and tr.testInd is empty what am I doing wrong? thanks in advance.

Answer 1

[Greg Heath]

The TRAINBR code covering indexing and ratios is BUGGY. I couldn't figure it out when I looked at it back in June 2013.

Now that I'm older, I might have better luck.

1. Complain to MATLAB, directly, with specific, repeatable, examples on MATLAB data

 help nndata
 doc nndata

2. Experiment some more to see if you can impose something other than the 80/0/20 default.

3. Another possibility is to use TRAIN with msereg

Hope this helps.

Thank you for formally accepting my answer

Greg

P.S. Please report any findings

[erte]

I tried to make custom divide function to divide data manually before training. but thank you so much.