jax.nn.initializers module

Common neural network layer initializers, consistent with definitions used in Keras and Sonnet.

Initializers

This module provides common neural network layer initializers, consistent with definitions used in Keras and Sonnet.

An initializer is a function that takes three arguments: (key, shape, dtype) and returns an array with dimensions shape and data type dtype. Argument key is a jax.random.PRNGKey random key used when generating random numbers to initialize the array.

constant(value[, dtype])	Builds an initializer that returns arrays full of a constant value.
delta_orthogonal([scale, column_axis, dtype])	Builds an initializer for delta orthogonal kernels.
glorot_normal([in_axis, out_axis, ...])	Builds a Glorot normal initializer (aka Xavier normal initializer).
glorot_uniform([in_axis, out_axis, ...])	Builds a Glorot uniform initializer (aka Xavier uniform initializer).
he_normal([in_axis, out_axis, batch_axis, dtype])	Builds a He normal initializer (aka Kaiming normal initializer).
he_uniform([in_axis, out_axis, batch_axis, ...])	Builds a He uniform initializer (aka Kaiming uniform initializer).
lecun_normal([in_axis, out_axis, ...])	Builds a Lecun normal initializer.
lecun_uniform([in_axis, out_axis, ...])	Builds a Lecun uniform initializer.
normal([stddev, dtype])	Builds an initializer that returns real normally-distributed random arrays.
ones(key, shape[, dtype])	An initializer that returns a constant array full of ones.
orthogonal([scale, column_axis, dtype])	Builds an initializer that returns uniformly distributed orthogonal matrices.
truncated_normal([stddev, dtype, lower, upper])	Builds an initializer that returns truncated-normal random arrays.
uniform([scale, dtype])	Builds an initializer that returns real uniformly-distributed random arrays.
variance_scaling(scale, mode, distribution)	Initializer that adapts its scale to the shape of the weights tensor.
zeros(key, shape[, dtype])	An initializer that returns a constant array full of zeros.