# BuildIT Index — Demo Dataset

## vendor-model-sample.csv

600 rows of real prediction data from the BuildIT Index repository's examples/ folder.

### Columns
1. **symbol** — Ticker symbol (e.g., AAPL)
2. **date** — Prediction date (YYYY-MM-DD)
3. **predicted** — Model's predicted price
4. **start** — Price at prediction time
5. **actual** — Actual price at resolution

### Verified Results
- Rows: 600
- Correct: 416
- Accuracy: 69.33%
- Wilson 95% CI: 65.5% – 72.9%
- Folds: 5 (80.00% → 55.83%)
- Verdict: OVERFIT (exit code 1)
- Baselines run: 2 (bare CSV)

### Usage
```bash
npx tsx scripts/certify-model.ts examples/vendor-model-sample.csv --configurations 20
```

### Verification
- SHA256: 8b3747cd980b388249b92f32d00d81c554e90f4998c158d63558b477c8d3f5a3
- Source: BuildIT Index repository, examples/vendor-model-sample.csv