David Monllaó e83f7b95d5 Fix activation functions support (#163) ... - Backpropagation using the neuron activation functions derivative - instead of hardcoded sigmoid derivative - Added missing activation functions derivatives - Sigmoid forced for the output layer - Updated ThresholdedReLU default threshold to 0 (acts as a ReLU) - Unit tests for derivatives - Unit tests for classifiers using different activation functions - Added missing docs		2018-01-09 11:09:59 +01:00
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Phpml	Fix activation functions support (#163)	2018-01-09 11:09:59 +01:00