optax.trace

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optax.trace#

optax.trace(
decay: jax.typing.ArrayLike,
nesterov: bool = False,
accumulator_dtype: Any | None = None,
) → optax.GradientTransformation[source]#

Compute a trace of past updates.

Parameters:

  • decay – Decay rate for the trace of past updates.

  • nesterov – Whether to use Nesterov momentum.

  • accumulator_dtype – Optional dtype to be used for the accumulator; if None then the dtype is inferred from params and updates.

Returns:

A optax.GradientTransformation object.

Note

optax.trace() and optax.ema() have very similar but distinct updates; trace = decay * trace + t, while ema = decay * ema + (1-decay) * t. Both are frequently found in the optimization literature.

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