tfl.lattice_layer.TorsionRegularizer

Torsion regularizer for tfl.layers.Lattice layer.

Lattice torsion regularizer penalizes how much the lattice function twists from side-to-side (see publication).

Consider a 3 x 2 lattice with weights w:

w[3]-----w[4]-----w[5]
  |        |        |
  |        |        |
w[0]-----w[1]-----w[2]

In this case, the torsion regularizer is defined as:

l1 * (|w[4] + w[0] - w[3] - w[1]| + |w[5] + w[1] - w[4] - w[2]|) +
l2 * ((w[4] + w[0] - w[3] - w[1])^2 + (w[5] + w[1] - w[4] - w[2])^2)

lattice_sizes Lattice sizes of tfl.layers.Lattice to regularize.
l1 l1 regularization amount. Either single float or list or tuple of floats to specify different regularization amount per dimension. The amount of regularization for the interaction term between two dimensions is the product of the corresponding per dimension amounts.
l2 l2 regularization amount. Either single float or list or tuple of floats to specify different regularization amount per dimension. The amount of regularization for the interaction term between two dimensions is the product of the corresponding per dimension amounts.

Methods

from_config

Creates a regularizer from its config.

This method is the reverse of get_config, capable of instantiating the same regularizer from the config dictionary.

This method is used by Keras model_to_estimator, saving and loading models to HDF5 formats, Keras model cloning, some visualization utilities, and exporting models to and from JSON.

Arguments
config A Python dictionary, typically the output of get_config.

Returns
A regularizer instance.

get_config

View source

Standard Keras config for serialization.

__call__

View source

Returns regularization loss for x.