How to implement neural networks?

Question

[nabeelmamoon]

So I have an array of tissue samples, each with methylation values for a set of specific genes. These samples are classified as different types of cancers, with about 8 types in all. Is there any way I can use neural networks to predict the conditions of test samples?

array like this: http://imgur.com/PvIdzJz

How would I do this in R programming? Can anyone offer SPECIFIC code? I've tried everything but it doesn't seem to work...

[Jean-Karim Heriche]

Please do not create a new post with the same question. This will dilute the information.

Answer 1

[Jean-Karim Heriche]

A little bit of Googling around gives you plenty of things to look at:

R packages: nnet, neuralnet

Examples:
http://gekkoquant.com/2012/05/26/neural-networks-with-r-simple-example/
https://beckmw.wordpress.com/tag/neural-network/
http://scg.sdsu.edu/ann_r/