Struct SparseGradient 

pub struct SparseGradient<A: Float + ScalarOperand + Debug> {
    pub indices: Vec<usize>,
    pub values: Vec<A>,
    pub dim: usize,
}

A struct representing a sparse gradient with indices and values

This provides a convenient interface for working with sparse gradients where most elements are zero.

Fields

indices: Vec<usize>

The indices of non-zero elements

values: Vec<A>

The values at the non-zero elements

dim: usize

The total dimension of the gradient (including zero elements)

Implementations

impl<A: Float + ScalarOperand + Debug + Send + Sync> SparseGradient<A>

pub fn new(indices: Vec<usize>, values: Vec<A>, dim: usize) -> Self

Create a new sparse gradient from indices and values

pub fn from_array(array: &Array<A, Ix1>) -> Self

Create a sparse gradient from a dense array, keeping only non-zero entries

pub fn to_array(&self) -> Array<A, Ix1>

Convert the sparse gradient to a dense array

pub fn is_empty(&self) -> bool

Check if this sparse gradient is empty (all zeros)