Struct BlockIdentity 

pub struct BlockIdentity {
    pub block_name: String,
    pub original_dim: usize,
    pub effective_dim: usize,
    pub design_range_rank: usize,
    pub singular_spectrum: String,
}

Per-block accounting record. original_dim is the spec’s column count at audit entry (post joint_null_rotation absorption — the audit is contractually run on the rotated specs). effective_dim is what remains after the audit drops aliased columns. Equal values mean the block carried no redundant directions w.r.t. earlier blocks.

Fields

block_name: String

original_dim: usize

effective_dim: usize

design_range_rank: usize

Numerical rank of the block’s column space at the n training rows, computed by penalty-aware column-pivoted RRQR on [J; S] (so penalty-covered design-null directions count as identified). Equal to original_dim for any well-posed block; smaller values flag a within-block rank deficiency that escaped within-smooth nullspace absorption.

singular_spectrum: String

Comma-joined descending singular values (√eig of the ranked Gram) of the matrix whose rank produced design_range_rank, populated ONLY when the block is within-block rank-deficient (design_range_rank < original_dim); empty otherwise. Surfaced in the intra-block-deficiency refusal so a range_rank ≪ dim verdict names the real geometry (a one-dominant-value spectrum = numerical rank collapse, e.g. an extreme per-row channel weight; a genuinely low-rank design has several near-zero values).

Trait Implementations

impl Clone for BlockIdentity

fn clone(&self) -> BlockIdentity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockIdentity

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.