Segmented options

Hi, this post is more discussion than issue. It's related to what was said before on issue #13.

Currently brains, when created take options hiddenLayers & learningRate :

var net = new NeuralNetwork({
   hiddenLayers: [4],
   learningRate: 0.6
});

And when trained, take data and options errorThresh, iterations, log & logPeriod :

net.train(data, {
   errorThresh: 0.004,  
   iterations: 20000,
   log: true,
   logPeriod: 10
});

What I'm asking is this, given that one cannot iteratively train a these neural networks, why are there 2 points at which different options are provided to the neural network?

Does it not make sense to declare all options/setting in one place, ie on creation of the neural network?

Perhaps something like:

var net = new NeuralNetwork({
   hiddenLayers: [4],
   learningRate: 0.6,
   errorThresh: 0.004,  
   iterations: 20000,
   log: true,
   logPeriod: 10
});

net.train(data);

Chris