Install any skill in seconds. Free to start, no credit card required.
Get Started Free →Evaluate trained machine learning models with the right metrics and comparison logic. Use for benchmark review, threshold selection, calibration, validation, and model comparison; not for feature engineering or leakage auditing.
.claude/skills/foryourhealth111-pixel-evaluating-machine-learning-models/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-08 | ✓→✗ | ▼ Worse | 13% | 0% |
| case-02 | ✓→✓ | = Same ✓ | -28% | 0% |
| case-03 | ✓→✓ | = Same ✓ | 5% | 0% |
| case-01 | ✓→✓ | = Same ✓ | 6% | 0% |
| case-04 | ✓→✓ | = Same ✓ | 22% | 0% |
Use this skill when the model exists and the question is whether it is good enough.
This skill focuses on choosing and interpreting the right evaluation metrics for the problem, then comparing candidate models or thresholds.
scikit-learn for classical modeling or ml-pipeline-workflow for end-to-end workflow ownershippreprocessing-data-with-automated-pipelinesml-data-leakage-guardscikit-learn for class-level error breakdowns and confusion matricesscientific-reporting when the evaluation must become a deliverable| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-02 | pass→pass | 15,894 | 10,484 | -34% | 1 | 1 | 0% | 3,286 | 2,362 | -28% | 0 | 0 | — |
case-03 | pass→pass | 16,463 | 16,352 | -1% | 1 | 1 | 0% | 3,196 | 3,351 | +5% | 0 | 0 | — |
case-01 | pass→pass | 9,160 | 8,043 | -12% | 1 | 1 | 0% | 1,727 | 1,829 | +6% | 0 | 0 | — |
case-04 | pass→pass | 12,341 | 15,475 | +25% | 1 | 1 | 0% | 2,254 | 2,758 | +22% | 0 | 0 | — |
case-05 | fail→fail | 9,173 | 9,142 | -0% | 1 | 1 | 0% | 1,486 | 1,915 | +29% | 0 | 0 | — |
case-06 | pass→pass | 9,656 | 8,813 | -9% | 1 | 1 | 0% | 1,736 | 1,728 | -0% | 0 | 0 | — |
case-07 | pass→pass | 11,798 | 11,776 | -0% | 1 | 1 | 0% | 1,918 | 2,292 | +19% | 0 | 0 | — |
case-08 | pass→fail | 14,536 | 15,194 | +5% | 1 | 1 | 0% | 2,417 | 2,732 | +13% | 0 | 0 | — |
case-09 | pass→pass | 9,149 | 12,149 | +33% | 1 | 1 | 0% | 1,696 | 2,484 | +46% | 0 | 0 | — |
case-10 | pass→pass | 9,074 | 11,186 | +23% | 1 | 1 | 0% | 1,676 | 2,106 | +26% | 0 | 0 | — |
case-11 | pass→pass | 11,447 | 9,930 | -13% | 1 | 1 | 0% | 2,109 | 1,896 | -10% | 0 | 0 | — |
case-12 | pass→pass | 7,458 | 7,325 | -2% | 1 | 1 | 0% | 1,235 | 1,570 | +27% | 0 | 0 | — |
case-13 | pass→pass | 12,439 | 17,392 | +40% | 1 | 1 | 0% | 2,524 | 3,633 | +44% | 0 | 0 | — |
case-14 | pass→pass | 7,068 | 6,687 | -5% | 1 | 1 | 0% | 1,237 | 1,367 | +11% | 0 | 0 | — |
case-15 | pass→pass | 6,497 | 8,441 | +30% | 1 | 1 | 0% | 1,119 | 1,684 | +50% | 0 | 0 | — |
case-16 | pass→pass | 8,811 | 12,362 | +40% | 1 | 1 | 0% | 1,512 | 2,380 | +57% | 0 | 0 | — |
case-17 | pass→pass | 14,974 | 14,857 | -1% | 1 | 1 | 0% | 2,821 | 2,793 | -1% | 0 | 0 | — |
case-18 | pass→pass | 12,081 | 8,946 | -26% | 1 | 1 | 0% | 2,167 | 1,961 | -10% | 0 | 0 | — |
case-19 | pass→pass | 7,093 | 8,023 | +13% | 1 | 1 | 0% | 1,322 | 1,737 | +31% | 0 | 0 | — |
case-20 | pass→pass | 8,168 | 7,521 | -8% | 1 | 1 | 0% | 1,558 | 1,580 | +1% | 0 | 0 | — |
case-21 | pass→pass | 4,958 | 8,685 | +75% | 1 | 1 | 0% | 973 | 1,849 | +90% | 0 | 0 | — |
case-22 | pass→pass | 6,485 | 6,196 | -4% | 1 | 1 | 0% | 1,188 | 1,434 | +21% | 0 | 0 | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 22 cases were attempted. The headline lift of -100 percentage points is the difference between those two pass rates over the 22 comparable cases. 1 case got worse with the skill loaded, and it is included in that figure.
Other measured skills in the registry, with their headline benchmark lift.