Enum CompressionAlgorithm 

#[repr(i32)]
pub enum CompressionAlgorithm {
    SVD = 0,
    LU = 1,
    CI = 2,
    Variational = 3,
}

Algorithm for tensor train compression.

These algorithms compress a tensor train to reduce bond dimensions.

C API Representation

• T4A_COMPRESS_SVD = 0
• T4A_COMPRESS_LU = 1
• T4A_COMPRESS_CI = 2
• T4A_COMPRESS_VARIATIONAL = 3

Variants

SVD = 0

SVD-based compression (orthogonalization + truncation).

Sweeps through the tensor train, applying SVD at each bond. Optimal truncation for given tolerance.

LU = 1

LU-based compression.

Uses LU decomposition instead of SVD. Faster but may not give optimal truncation.

CI = 2

Cross Interpolation based compression.

Uses CI/skeleton decomposition for compression.

Variational = 3

Variational compression.

Optimizes the compressed tensor train using sweeping. Useful when target bond dimension is known.

Implementations

impl CompressionAlgorithm

pub fn from_i32(value: i32) -> Option<Self>

Create from C API integer representation.

Returns None for invalid values.

pub fn to_i32(self) -> i32

Convert to C API integer representation.

pub fn name(&self) -> &'static str

Get algorithm name as string.

Trait Implementations

impl Clone for CompressionAlgorithm

fn clone(&self) -> CompressionAlgorithm

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CompressionAlgorithm

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for CompressionAlgorithm

fn default() -> CompressionAlgorithm

Returns the “default value” for a type.

impl Hash for CompressionAlgorithm

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for CompressionAlgorithm

fn eq(&self, other: &CompressionAlgorithm) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CompressionAlgorithm

impl Eq for CompressionAlgorithm

impl StructuralPartialEq for CompressionAlgorithm