Struct SparseDesignMatrix 

pub struct SparseDesignMatrix { /* private fields */ }

Implementations

impl SparseDesignMatrix

pub fn new(matrix: SparseColMat<usize, f64>) -> Self

pub fn hessian_accumulator_template(&self) -> Option<SparseHessianAccumulator>

A zero-valued accumulator over this design’s XᵀWX sparsity pattern, building that pattern at most once per design.

Every IRLS/Newton iteration reassembles Xᵀ diag(w) X with new weights but the SAME X, and the symbolic pattern is a function of X alone. Rebuilding it per assembly cost O(Σ_i nnz_i² · log) in BTreeSet insertions and showed up as the second-largest symbol in a fit profile. Caching it here — rather than in a process-global keyed by address — ties the pattern’s lifetime to the data that determines it, so a dropped-and-reallocated design can never inherit a stale neighbour’s pattern (#2416).

pub fn try_to_dense_arc( &self, context: &str, ) -> Result<Arc<Array2<f64>>, String>

pub fn try_to_dense_governed( &self, context: &str, ) -> Result<Governed<Arc<Array2<f64>>>, String>

Densify under the process-wide byte governor, coupling the returned dense copy to its RAII reservation. A refusal is typed evidence that the dense footprint does not fit the joint ledger right now — callers route to a streaming / sparse strategy instead of allocating.

pub fn to_dense_arc(&self) -> Arc<Array2<f64>>

pub fn to_csr_arc(&self) -> Option<Arc<SparseRowMat<usize, f64>>>

Trait Implementations

impl AsRef<SparseColMat<Own<usize, f64>>> for SparseDesignMatrix

fn as_ref(&self) -> &SparseColMat<usize, f64>

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for SparseDesignMatrix

fn clone(&self) -> SparseDesignMatrix

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Deref for SparseDesignMatrix

type Target = SparseColMat<Own<usize, f64>>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.