pub fn streaming_sparse_running_stats(
data_vec: &SparseIoVec,
block_size: Option<usize>,
progress_label: &str,
) -> Result<SparseRunningStatistics<f32>>Expand description
Stream cells through data_vec in block_size chunks, accumulating
per-feature NB sufficient statistics into one SparseRunningStatistics
per rayon worker, then merge to one result.
progress_label is shown in the indicatif progress bar (e.g.
"HVG", "NB-Fisher").