class nbla::Adadelta

template<typename T>
class Adadelta : public nbla::Solver

Adadelta.

This is defined as

\[\begin{split} g_t \leftarrow \Delta w_t\\ v_t \leftarrow - \frac{RMS \left[ v_t \right]_{t-1}}{RMS \left[ g \right]_t}g_t\\ w_{t+1} \leftarrow w_t + \eta v_t \end{split}\]

See also

See the paper linked below for more details. Matthew D. Zeiler ADADELTA: An Adaptive Learning Rate Method https://arxiv.org/abs/1212.5701

Param lr:

\(\eta\) Learning rate.

Param decay:

\(\gamma\) Decay rate.

Param eps:

\(\epsilon\) Tiny factor for avoiding 0-division.

Public Functions

inline virtual float learning_rate()

Set learning rate.