public void collect_weights(
float[] input,
float t)
{
d_layers[0].process(input);
for (int l = 1; l < d_layer_count; l++)
{
d_layers[l].process(d_layers[l - 1].getOutput());
}
// second pass: backward information propagation
float [] target = { t };
d_layers[d_layer_count - 1].back_propagate(ToolsMathCollectionFloat.subtract(target, d_layers[d_layer_count - 1].getOutput()));
for (int l = d_layer_count - 2; l >= 0; l--)
{
d_layers[l].back_propagate(d_layers[l + 1].getInputError());
}
// third pass: learning.
// uses the information stored during previous passes
for (int l = 0; l < d_layer_count; l++)
{
d_layers[l].train_batch(d_learning_rate, d_eligibility);
}
}
public void train_batch(
float[][] inputs,
float[][] targets)
{ // train on data set; batch learning
// outer loop goes through all input, and makes the layers collect batch weights.
for (int example = 0; example < inputs.Length; example++)
{
d_layers[0].process(inputs[example]);
for (int layer_index = 1; layer_index < d_layer_count; layer_index++)
{
d_layers[layer_index].process(d_layers[layer_index - 1].getOutput());
}
// second pass: backward information propagation
d_layers[d_layer_count - 1].back_propagate(ToolsMathCollectionFloat.subtract(targets[example], d_layers[d_layer_count - 1]
.getOutput()));
for (int layer_index = d_layer_count - 2; layer_index >= 0; layer_index--)
{
d_layers[layer_index].back_propagate(d_layers[layer_index + 1].getInputError());
}
// third pass: learning.
// uses the information stored during previous passes
for (int layer_index = 0; layer_index < d_layer_count; layer_index++)
{
d_layers[layer_index].train_batch(d_learning_rate, d_eligibility);
}
}
for (int layer_index = 0; layer_index < d_layer_count; layer_index++) // all input has been parsed, apply the
// weights gained from this batch.
{
d_layers[layer_index].applyBatchWeights();
}
}
public void train(
float[] input,
float[] target)
{ // train on single input and target example
// first pass: forward information propagation
d_layers[0].process(input);
for (int layer_index = 1; layer_index < d_layer_count; layer_index++)
{
d_layers[layer_index].process(d_layers[layer_index - 1].getOutput());
}
// second pass: backward information propagation
d_layers[d_layer_count - 1].back_propagate(ToolsMathCollectionFloat.subtract(target, d_layers[d_layer_count - 1].getOutput()));
for (int later_index = d_layer_count - 2; later_index >= 0; later_index--)
{
d_layers[later_index].back_propagate(d_layers[later_index + 1].getInputError());
}
// third pass: learning.
// uses the information stored during previous passes
for (int layer_index = 0; layer_index < d_layer_count; layer_index++)
{
d_layers[layer_index].learn(d_learning_rate, d_eligibility);
}
}
public TransformRescale(
float [] lower_bounds,
float [] upper_bounds)
{
this.lower_bounds = ToolsCollection.Copy(lower_bounds);
this.upper_bounds = ToolsCollection.Copy(upper_bounds);
window_sizes = ToolsMathCollectionFloat.subtract(upper_bounds, lower_bounds);
}
public FunctionColorToFloat32Gray(
float [] factors)
{
if (factors.Length != 4)
{
throw new Exception("Factors must be of length 4");
}
else
{
argb_weigths = ToolsCollection.Copy(factors);
sum = ToolsMathCollectionFloat.sum(argb_weigths);
}
}