README.md

---
pretty_name: "HebOCRBench v1 — Modern Hebrew Participant Pack"
language:
  - he
task_categories:
  - image-to-text
tags:
  - ocr
  - hebrew
  - rtl
  - benchmark
  - evaluation
license: other
size_categories:
  - 10K<n<100K
---

# HebOCRBench v1 — Modern Hebrew participant pack

This is the public, fixed **evaluation-input pack** for the five-track
HebOCRBench 1.0 Modern Hebrew printed-document headline. It contains 34,267
images and opaque input records. It intentionally contains **no transcription
gold, original source identifiers, source URLs, private filenames, organizer
ID map, or HMAC key**.

The unchanged certified references are withheld from this repository. An
organizer remaps submitted opaque identifiers and scores predictions against
those references. Withholding the gold is an evaluation protocol: the source
material is public-fixed, so this release does not claim that models have never
seen it or that it is contamination-free.

## Exact release identity

| Binding | Value |
|---|---|
| Benchmark version | `1.0.0` |
| Suite fingerprint | `c68250ec4320485e243171b7d3f86c9b3b526f8ada317eda592cd7289f4df5ea` |
| Participant-pack fingerprint | `957e3b4f05707155db407d6707d742c7fe459365f575febb963e9d5732c3913c` |
| Suite-lock SHA-256 | `04709dd2a76882fdb02704134dba3b3dfcc59b90dc967147f1a3b31d6d70c9ef` |
| Locked files | 34,275, plus `PACK-LOCK.json` |
| Image records | 34,267 |
| Sharding | two lowercase hex characters; maximum 139 images per directory |

The byte-locked pack is under [`participant-v1.0.0/`](participant-v1.0.0/).
Its public verification material is:

- [`PACK-LOCK.json`](participant-v1.0.0/PACK-LOCK.json): SHA-256 and size for
  every locked file, plus the pack fingerprint;
- [`PACK-MANIFEST.json`](participant-v1.0.0/PACK-MANIFEST.json): release,
  track, count, sharding, and no-leakage declarations;
- [`suite-lock.json`](participant-v1.0.0/suite-lock.json): the exact five-track
  suite binding.

The `gold_sha256` values in the two public manifests are one-way integrity
bindings only. No reference text or reference structure is included.

## Tracks

| Track | Inputs | Mode |
|---|---:|---|
| `modern-bidi-v1` | 192 | Unicode/BiDi conformance with supplied geometry |
| `modern-line-recognition-v1` | 28,414 | line recognition with supplied geometry and opaque line IDs |
| `modern-page-ocr-v1` | 700 | blind end-to-end page OCR |
| `modern-tables-v1` | 61 | blind table detection, structure, spans, positions, and cell text |
| `modern-robustness-v1` | 4,900 | blind OCR on locked degradation pairs |

All Hebrew text in predictions must be in **logical Unicode order**. Do not
mirror images or reverse Hebrew strings. Latin runs, numbers, URLs, email
addresses, identifiers, and punctuation keep their ordinary internal order.

## Download and verify

```bash
hf download ssdataanalysis/hebocrbench-v1 \
  --repo-type dataset \
  --local-dir hebocrbench-v1

cd hebocrbench-v1/participant-v1.0.0
jq -r '.files[] | "\(.sha256)  \(.path)"' PACK-LOCK.json \
  | shasum -a 256 --quiet -c -
```

The checksum command exits with status 0 only when every locked file has the
declared bytes. `PACK-LOCK.json` itself declares the participant-pack
fingerprint shown above.

## Run a model and prepare predictions

For each track, read:

```text
participant-v1.0.0/tracks/<track-id>/inputs.jsonl
```

Resolve each `image.path` relative to `participant-v1.0.0/`. Write one JSON
object per input line to a separate prediction JSONL for that track. Copy the
opaque `page_id` exactly and include `schema_version: "1.0"` and `track_id`.

At minimum, emit the fields required by the selected task:

- BiDi and line recognition: preserve the supplied opaque region/line IDs and
  add recognized `text` in their lines;
- blind page OCR and robustness: emit discovered `regions`, line text, and
  `reading_order`;
- tables: emit detected `tables` and their cells, spans, positions, geometry,
  and logical-order cell text.

Example envelope (the exact nested fields depend on the track):

```json
{"schema_version":"1.0","track_id":"modern-page-ocr-v1","page_id":"hbo-v1-p-…","regions":[],"reading_order":{"edges":[]},"tables":[]}
```

A submission must contain exactly one prediction for every page in the track;
unknown, duplicate, or missing opaque page IDs are rejected. The prediction
schema, track contracts, organizer remapping tool, official scorer, and
reproducibility documentation live in the
[HebOCRBench code repository](https://github.com/office883/HebOCRBench).

## What this pack does not cover

This release is only the five-track **Modern Hebrew print** headline. It does
not blend scientifically different families into one score. The full suite
also records separate real-data extensions for writer-disjoint modern
handwriting, a narrow six-page Pinkas handwriting subset, and 34 pages of mixed
square/Rashi HaZefira historical press. Synthetic niqqud and single-font Rashi
probes are non-rankable diagnostics.

The following remain explicit missing real-data coverage in v1:

- forms with field-level ground truth;
- Biblical Hebrew with real cantillation ground truth aligned to scans;
- pure-Rashi historical print with region- or line-level Rashi labels.

No score from this pack should be presented as a handwriting, Biblical,
cantillation, historical-print, or pure-Rashi result.

## Provenance and terms

HebOCRBench software is MIT-licensed. **That code license does not relicense
the images in this dataset.** Each source document retains its own terms,
rights, and attribution requirements. The benchmark build records
revision-locked acquisition evidence, hashes, page counts, provenance, and
source-specific terms; upstream identities and URLs are deliberately omitted
from this blind participant pack. Consult the code repository's source and
license audit before redistributing or using source images beyond benchmark
evaluation.

## Citation

Cite the HebOCRBench software and report the exact suite, track, dataset, and
participant-pack fingerprints used for every result. The canonical citation
metadata is maintained in `CITATION.cff` in the code repository.

---

עברית בקצרה: זהו מארז הקלט הציבורי והנעול של חמשת מסלולי הדפוס העברי
המודרני. ה־gold נשמר בנפרד, המזהים אטומים, וכל תוצאה חייבת לציין את טביעות
האצבע המדויקות של ה־suite וה־pack. אין להציג תוצאה ממנו כתוצאת כתב־יד,
מקרא עם טעמים או Rashi היסטורי טהור.