experiment: E12_nk
kind: speciation
seed: 12
n_replicates: 15

# E12 (NK variant) — the EPISTASIS WEDGE, the paper's distinct falsifiable claim: at matched divergence,
# mergeability is governed by the EPISTASIS (ruggedness K) of the capability landscape, not by divergence
# alone (every existing ML merge predictor is a divergence measure). Parents are LOCAL OPTIMA reached by
# hill-climbing a Kauffman NK landscape from random starts; recombining them exposes broken co-adapted
# blocks. As K rises, recombining two adapted parents flips from a gain (offspring above the worse parent)
# to outbreeding depression (offspring below it). K=0 (additive) is the no-isolation control.

speciation:
  landscape: nk
  L: 16
  K: [0, 2, 4, 6, 8, 10]      # ruggedness / epistasis knob
  n_pairs: 40                 # random parent-pairs (local optima) aggregated per landscape
  recomb_rate: 0.5
  n_offspring: 200

output:
  dir: results/speciation_bdm_nk