This function trains a DArch autoencoder network with the
conjugate gradient method.
minimizeAutoencoder(darch, trainData, targetData, length)A instance of the class DArch.
The training data matrix
The labels for the training data
Numbers of line search
The trained DArch object.
This function is build on the basis of the code from G. Hinton et. al.
(http://www.cs.toronto.edu/~hinton/MatlabForSciencePaper.html - last visit
06.06.2013) for the fine tuning of deep belief nets. The original code is
located in the files 'backpropclassify.m', 'CG_MNIST.m' and
'CG_CLASSIFY_INIT.m'.
It implements the fine tuning for a classification net with backpropagation
using a direct translation of the minimize function from C.
Rassmussen (available at http://www.gatsby.ucl.ac.uk/~edward/code/minimize/
- last visit 06.06.2013) to R.