normalize option in neuralnetwork formulation

Olga92

hello everyone,
i'm working on neuralnetwork model using rapidminer and i choose the normlize  in the parameter options but i wanna know please which algorithm is used for this normalization ? can i have the formula for it ? 
Thanks a lot for your help
Best regards

BalazsBarany

Hi!

The core of RapidMiner is open source and available on Github.

This is the source code of the Neural Net operator.
https://github.com/rapidminer/rapidminer-studio/blob/master/src/main/java/com/rapidminer/operator/learner/functions/neuralnet/ImprovedNeuralNetModel.java

I'm not a Java developer, but it looks to me like a range transformation between 0 and 1 (initInputLayer function). 

Regards,
Balázs

Telcontar120

Also, if you aren't happy with this normalization function, you have the option to do your own normalization using one of the other methods using the Normalize operator prior to applying the NN operator (and then don't select the normalize parameter there).