Hello all, I am trying to use the neuralnet function from the neural package to train neural networks. I am finishing my thesis over statistical learning in which I am comparring the MSE values for various algorithms with random data sets, so I do not have a specific application. I have two issues that I am looking for help with. 1. When I train a network with a real data set, I ALWAYS get the mean value as all of the predictions! I get beautiful results when I use a generated data set, but only the mean for real data. Is there any explanation of this? 2. For some data sets I get this error: "Error in neurons[[length.weights]] : attempt to select less than one element" I can not find anything about what this means. I would be grateful for any help over either or both of these issues. Thanks, Donna _________________________________________________________________ [[elided Hotmail spam]] [[alternative HTML version deleted]]