Optimizer

chainer.optimizer.Hyperparameter	Set of hyperparameter entries of an optimizer.
chainer.UpdateRule	Base class of all update rules.
chainer.Optimizer	Base class of all numerical optimizers.
chainer.GradientMethod	Base class of all single gradient-based optimizers.

Hook functions

chainer.optimizer.WeightDecay	Optimizer/UpdateRule hook function for weight decay regularization.
chainer.optimizer.Lasso	Optimizer/UpdateRule hook function for Lasso regularization.
chainer.optimizer.GradientClipping	Optimizer hook function for gradient clipping.
chainer.optimizer.GradientNoise	Optimizer/UpdateRule hook function for adding gradient noise.