php-ai / php-ml / 405

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Build # 405

Build Type

Pull #163

travis-ci

Committed by

web-flow

Commit Message

Fix activation functions support

- 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

Pull Request Pull Request #163: Fix activation functions support

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50.0

/src/Phpml/NeuralNetwork/ActivationFunction/Gaussian.php

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php-ai / php-ml / 405

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