Rectangular analogue of rZ_frn_fc. Row-wise rank
constraints: ranked nominees are positive and ordered by rank;
non-nominees fall below all ranked cells in the row (and below 0
when the row is unsaturated). With rho = 0 the unipartite triangle
coupling drops out.
rZ_frn_bip_fc(Z, EZ, Y, YL, odmax, odobs)updated nA x nB latent matrix.
current rectangular latent matrix (nA x nB).
expected value (nA x nB).
observed rank matrix (nA x nB); 0 = unranked, 1..ncol(YL) = rank order.
per-row ranked-receiver list (nA x max_rank).
row-wise max nominations.
row-wise observed outdegree.
Cassy Dorff, Shahryar Minhas, Tosin Salau
Monotonicity convention (important for simulation). The
sampler enforces higher Y -> higher Z: when Y[i, j] >
Y[i, k], the corresponding latent values satisfy Z[i, j] >
Z[i, k]. When simulating data for recovery tests, build Y via
rank(Z[i, ]) (low rank = small Y), not rank(-Z[i, ]).
the inverted convention identifies the negative of the true beta.