| # Reproducing Pointerbench-Text |
|
|
| The benchmark is generated programmatically from the |
| `text-coordinate-grounding` generator in the source repository. |
|
|
| ```bash |
| # from the generator directory in the source repo: |
| python3 build_textbench.py --n 500 --seed 90211 --out /path/to/pointerbench-text |
| ``` |
|
|
| - **Seed `90211`** is disjoint from the training-data seed (`7`), so every |
| benchmark page is unseen during training. |
| - The build renders one distinct page per example, saves it as |
| `data/test/<i>.png`, and writes one `data/test/metadata.jsonl` row with the |
| instruction, the pixel `bbox`, a reference `point`, `answer_type`, `eval`, and |
| the data_type / category / surface / language / difficulty tags. |
| - Target kinds follow the generator's native `KIND_WEIGHTS`; bbox-answer kinds |
| are preserved instead of being filtered out. This includes the invoice-field |
| kinds (number, dates, sender/recipient, line items and the full line-item |
| table, subtotal, tax / VAT ID, total, IBAN/BIC, bank details), which render on |
| dedicated invoice surfaces so each target is unambiguous. |
| - Bbox-answer rows (text boxes and invoice fields) are scored with an asymmetric |
| coverage/precision rule (`coverage >= 0.90`, `precision >= 0.70`) rather than |
| plain IoU; the per-row thresholds are written into each row's `eval` object. |
| - Language mix is fixed by the builder: 50% English, then 10% each of German, |
| French, Spanish, Italian, Dutch. |
| - Rendering is deterministic given the seed (pure PIL), and each instruction is |
| re-resolved by an independent verifier to confirm a single matching target, |
| so the box coordinates are pixel-exact. |
|
|
| Regenerating with the same seed reproduces the identical 500 examples. To grow |
| or refresh the set, change `--n` / `--seed` and bump the dataset version. |
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