Thread Subject: neural networks generalisation

Dear all

I am working on characters recognition using neural networks
I have got good results (100 %) when testing the neural network on the same training data in the other case I got bad results (40 %)

I will be highly appreciated if any one help me about how to improve the neural network generalisation.
thanks in advance

"cathrine lab" <lousa_br@yahoo.fr> wrote in message <ho7ilg$8p6$1@fred.mathworks.com>...
> Dear all
>
> I am working on characters recognition using neural networks
> I have got good results (100 %) when testing the neural network on the same training data in the other case I got bad results (40 %)
>
> I will be highly appreciated if any one help me about how to improve the neural network generalisation.
> thanks in advance

How do you choose your training set
and what percentage of the test do you use for training?