Re: How many hidden neurons???

Dear Jose
Ziv Boger in Isreal says there are ever only between 3 & 10 
>>fundamental concepts<< in a model's data.  Why not try 10 and see if 
your error is not too bad.

Paul

Jose M. Castro wrote:
> I've just builded a neural net with 2 input and 1 output neurons, the
> hidden layer works fine with 20 neurons. The object is to predict
> porosity values from gamma ray and electrical induction inputs. I've
> been asked to explain why did I used 20 neurons in the hidden layer.
> Is there some mathematical background or empirical relation to
> determine the number of these neurons? Less neurons give poor results
> and the more neurons I add the slower the program runs.
> Thanks in advance
>
> Manolo