| # Printed-text development control |
|
|
| After the EHRI sanity check, compare `microsoft/trocr-base-printed` with |
| `PiotrSty/trocr-pl-mixed-v3` on identical historical development crops. |
|
|
| ## Run on Kaggle |
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|
| 1. Import `training/kaggle_printed_dev_control.ipynb` into a new notebook. |
| 2. Enable GPU and Internet. Do not reuse the Kraken session. |
| 3. Run All. Download the ZIP using the final embedded download link or Output. |
| 4. Return the ZIP for review of predictions, crop geometry and reference defects. |
|
|
| No tokens, training or upload to Hugging Face are required. Source/model revisions |
| are pinned in the script. The ZIP contains crops, raw predictions, references, |
| metadata, runtime versions, checksums and `review.html`; it excludes model weights. |
|
|
| ## Scope and limits |
|
|
| - Validation regions only; frozen test collections are rejected, and exact crop |
| hashes are checked against test-region metadata. No near-duplicate audit. |
| - Select all references without line breaks and with at least 20 characters. |
| At the pinned revision this yields 15 candidates across three collections, |
| mostly headings and publication details. This is not representative body text. |
| - A reference without a newline does not prove the image contains one line. |
| Inspect `review.html` before interpreting the aggregate result. |
| - NFC and whitespace normalization only. Keep historical spelling, private-use |
| characters and replacement characters; flag the latter two rather than quietly |
| removing difficult references. Ground truth has not been manually audited. |
| - Model-card training descriptions do not establish absence of contamination |
| across all upstream checkpoints. This is development evidence, not held-out SOTA. |
| - Failed predictions remain empty strings in CER/WER denominators. Check errors |
| and truncation flags before comparing model quality. |
| - Do not compare these region metrics directly with the 36-page Kraken/Tesseract |
| results. No segmentation or reading-order quality is measured here. |
|
|
| Local verification covers selection, split guards, scoring and notebook syntax. |
| GPU inference still needs the Kaggle run; no model-quality result is claimed yet. |
|
|
