Validate and Flatten a Relationship Matrix for Lookup

Validates relationship and packs it into a flat numeric vector plus row/column level vectors that adjacency_score_vec() can index into in constant time per cell. speed() calls this once before the SA loop so the per-iteration cost stays in the lookup itself. Direct callers of calculate_adjacency_score() must wrap their matrix with this function before passing - the score functions consume the prepped form only.

Usage

prep_relationship(relationship, treatments = NULL)

Arguments

relationship

A numeric matrix with rownames and colnames covering every treatment value to be scored.

treatments

Optional character vector of treatment values that relationship must cover. Skipped when NULL.

Value

A list with flat (column-major flattened matrix), row_levels, col_levels, and n_row.