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55151a3 dc392dc 55151a3 dc392dc 55151a3 dc392dc 55151a3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | # Model Card · B4 — What caused this event, from the operator's free-text note?
*Generated 2026-09-02 from `reports/` — do not edit by hand.*
## What this model answers
What caused this event, from the operator's free-text note?
## Caveats
- Descriptions mix English and Kannada, often within one entry. Character n-grams are used rather than word tokenisation.
- Per-language F1 is reported because a single macro-F1 could hide a model that works on the English majority and fails on Kannada.
## Results
Ranked by **Macro F1 ↑** (higher is better). Every family that ran is listed, including those that lost — the comparison is the deliverable. Figures come from a single chronological split, so there is no spread to report.
| Model | Family | Macro F1 ↑ | Accuracy ↑ | Macro F1 · en ↑ | Macro F1 · kn ↑ | Fit | Beats baseline |
|---|---|---:|---:|---:|---:|---:|---|
| `tfidf_char_logreg` | nlp | 0.4782 | 0.6555 | 0.4833 | 0.4717 | — | yes |
| `majority` | baseline | 0.0441 | — | — | — | — | *baseline* |
**Best learned family: `tfidf_char_logreg`** at 0.4782, 10.8x the strongest baseline (`majority` at 0.0441).
## Reproduction
```bash
make data && make ingest && make features
make train-b
```
Seed `42`. Splits are chronological, never random.
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