H-SVD

H-SVD indicator factory

tohubohu.hsvd.hsvd(n: int, mapping: Callable[[...], jax.Array], observable: Callable[[...], jax.Array], *, delay: int = 1, length: int | None = None, dimension: int | None = None, normalize: bool = True, background: float = 1e-16) → Callable[[...], jax.Array]

H-SVD indicator factory

Parameters:

• n (int) – number of iterations to perform

• mapping (Callable[[Array, *Any], Array]) – state transformation mapping

• observable (Callable[[Array, *Any], Array]) – function to apply

• delay (int, default=1) – delay

• length (Optional[int]) – subsequence length

• dimension (Optional[int]) – number of subsequences

• normalize (bool, default=True) – normalization flag

• background (float, default=1.0E-16) – singular values background (constant added to all singular values)

Return type:

Array

tohubohu.hsvd.svd_entropy(sequence: jax.Array, *, delay: int = 1, length: int | None = None, dimension: int | None = None, normalize: bool = True, background: float = 1e-16) → jax.Array

Compute SVD entropy of a given sequence

Parameters:

• sequence (Array) – input sequence

• delay (int, default=1) – delay

• length (Optional[int]) – subsequence length

• dimension (Optional[int]) – number of subsequences

• normalize (bool, default=True) – normalization flag

• background (float, default=1.0E-16) – singular values background (constant added to all singular values)

Return type:

Array