pub fn bitnet_matrix(
rows: usize,
cols: usize,
seed: u64,
target_sparsity: f64,
) -> TritMatrixExpand description
Generate a TritMatrix with exactly target_sparsity fraction of zero entries.
Non-zero entries are ±1 with equal probability. Uses a deterministic LCG so results are reproducible across runs. This mirrors the weight distribution seen in trained BitNet b1.58 models (55-65 % zeros after quantization).