Type Alias SparseMat 

pub type SparseMat = CsMatI<f32, u32, usize>;

Sparse matrix with u32 column indices to save memory (4 bytes vs 8 bytes per index). Uses usize for indptr since nnz can exceed u32::MAX for very large datasets. Valid for n_samples < 2^32 (~4 billion).

Aliased Type

pub struct SparseMat { /* private fields */ }