Crate numcodecs_random_projection 

Random Projection codec implementation for the numcodecs API.

Structs

ClosedOpenUnit

Floating point number in $[0.0, 1.0)$

OpenClosedUnit

Floating point number in $(0.0, 1.0]$

RandomProjectionCodec

Codec that uses random projections to reduce the dimensionality of high- dimensional data to compress it.

Enums

RandomProjectionCodecError

Errors that may occur when applying the RandomProjectionCodec.

RandomProjectionKind

Projection kind that is used to generate the random projection matrix

RandomProjectionReduction

Method with which the reduced dimensionality $K$ is selected

Traits

FloatExt

Floating point types.

Functions

density_or_ping_li_minimum

Extract the provided density if it is Some(_), or compute the minimum required density $\frac{1}{\sqrt{d}}$ as recommended by Li et al .

johnson_lindenstrauss_min_k

Find a ‘safe’ number of components $K$ to randomly project to.

project_into

Applies random projection to the input data and outputs into the projected array.

project_with_projection

Applies random projection to the input data with the given seed, reduction method, and projection kind and returns the resulting projected array.

reconstruct

Applies the (approximate) inverse of random projection to the projected array to reconstruct the input data with dimensionality d and returns the resulting reconstructed array.

reconstruct_into

Applies the (approximate) inverse of random projection to the projected array to reconstruct the input data outputs into the reconstructed array.

reconstruct_into_with_projection

Applies the (approximate) inverse of random projection to the projected array to reconstruct the input data with the given seed and projection kind and outputs into the reconstructed array.

reconstruct_with_projection

Applies the (approximate) inverse of random projection to the projected array.