dlinear_scaler

Per-window scalers for DLinear: identity (NF default) and robust (median/MAD).

Scaler

chronax.dlinear_scaler.Scaler

A protocol defining the interface for per-window scalers.

stats(self, x, axis=1)

Parameter	Type	Default	Description
x	jnp.ndarray	-	(undocumented)
axis	int	1	(undocumented)

Returns: tuple[jnp.ndarray, jnp.ndarray] (shift, scale)

transform(self, x, shift, scale)

Parameter	Type	Default	Description
x	jnp.ndarray	-	(undocumented)
shift	jnp.ndarray	-	(undocumented)
scale	jnp.ndarray	-	(undocumented)

Returns: jnp.ndarray

inverse(self, z, shift, scale)

Parameter	Type	Default	Description
z	jnp.ndarray	-	(undocumented)
shift	jnp.ndarray	-	(undocumented)
scale	jnp.ndarray	-	(undocumented)

Returns: jnp.ndarray

IdentityScaler

chronax.dlinear_scaler.IdentityScaler

No-op scaler (shift=0, scale=1). Matches neuralforecast's scaler_type='identity'.

stats(self, x, axis=1)

Parameter	Type	Default	Description
x	jnp.ndarray	-	(undocumented)
axis	int	1	(undocumented)

Returns: tuple[jnp.ndarray, jnp.ndarray] (shift, scale)

transform(self, x, shift, scale)

Parameter	Type	Default	Description
x	jnp.ndarray	-	(undocumented)
shift	jnp.ndarray	-	(undocumented)
scale	jnp.ndarray	-	(undocumented)

Returns: jnp.ndarray

inverse(self, z, shift, scale)

Parameter	Type	Default	Description
z	jnp.ndarray	-	(undocumented)
shift	jnp.ndarray	-	(undocumented)
scale	jnp.ndarray	-	(undocumented)

Returns: jnp.ndarray

RobustScaler

chronax.dlinear_scaler.RobustScaler

Median + MAD scaler with 0.6745*std fallback when MAD=0.

stats(self, x, axis=1)

Parameter	Type	Default	Description
x	jnp.ndarray	-	(undocumented)
axis	int	1	(undocumented)

Returns: tuple[jnp.ndarray, jnp.ndarray] (median, scale)

transform(self, x, shift, scale)

Parameter	Type	Default	Description
x	jnp.ndarray	-	(undocumented)
shift	jnp.ndarray	-	(undocumented)
scale	jnp.ndarray	-	(undocumented)

Returns: jnp.ndarray

inverse(self, z, shift, scale)

Parameter	Type	Default	Description
z	jnp.ndarray	-	(undocumented)
shift	jnp.ndarray	-	(undocumented)
scale	jnp.ndarray	-	(undocumented)

Returns: jnp.ndarray

resolve_scaler

chronax.dlinear_scaler.resolve_scaler

Resolve a scaler from a name ('identity'/'robust') or a Scaler instance.

Parameter	Type	Default	Description
scaler	str \| Scaler	-	(undocumented)

Returns: Scaler Raises: ValueError (if an unknown scaler name is provided)