Why ablation matters
A model-breeding system has many moving parts. Without ablation, a successful run does not tell you what caused the improvement. Was it the mutation operator, the benchmark, the router, the archive, the release policy, or luck?
Components to ablate
| Component | Turn it off by | Question answered |
|---|---|---|
| Mutation operator | remove one operator family | which operator produces useful descendants? |
| Quality-diversity archive | select only top aggregate score | does diversity help after drift? |
| Router learning | use static routing | does learning improve selection? |
| Judge gate | use direct specialist output | does judging improve quality enough to repay cost? |
| No-op threshold | promote all positive scores | does conservative stasis reduce regressions? |
| Human review | compare automated-only to reviewed release | which decisions need human judgment? |
Ablation runner
FUNCTION run_ablation(system_config, ablations, benchmark)
control <- RUN_EXPERIMENT(system_config, benchmark)
rows <- []
FOR ablation IN ablations
modified <- APPLY_ABLATION(system_config, ablation)
result <- RUN_EXPERIMENT(modified, benchmark)
rows.APPEND(COMPARE(control, result, ablation))
END FOR
RETURN rows
END FUNCTIONUse paired evaluation
Use identical task streams, hardware, seeds, and policy thresholds where possible. If the task stream changes between runs, an apparent improvement may be noise.
Negative results are valuable
Ablations often show that a fashionable mechanism does not repay its cost. Preserve those results. They protect the ecology from repeating expensive experiments and help tune the viability weights.
Reporting standard
Each ablation report should include the removed component, expected effect, observed effect, confidence, cost delta, failure slices, and whether the result changes release policy.
Source reports used for this guide
These reports are preserved verbatim in the site archive. The guide above is an editorial synthesis and may narrow, qualify, or reorganize claims from the source material.