Kopie von Keyven/german-ocr-3

.gitattributes

@@ -33,3 +33,5 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+german-ocr-3-Q4_K_M.gguf filter=lfs diff=lfs merge=lfs -text
+german-ocr-3-nano-Q4_K_M.gguf filter=lfs diff=lfs merge=lfs -text

LICENSE

@@ -0,0 +1,201 @@
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+
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+   Copyright 2026 Keyvan Hardani
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NOTICE

@@ -0,0 +1,14 @@
+German-OCR-3
+Copyright 2026 Keyvan Hardani
+
+Licensed under the Apache License, Version 2.0 (see LICENSE).
+
+Model architecture: Qwen3.5 Small Series
+Copyright (c) 2025-2026 Qwen Team, Alibaba Group · Apache License 2.0
+https://huggingface.co/Qwen · https://qwen.ai
+
+Third-party tools used in the build / serve pipeline:
+  - Ollama (MIT) — https://github.com/ollama/ollama
+  - llama.cpp (MIT) — https://github.com/ggml-org/llama.cpp
+  - vLLM (Apache 2.0) — https://github.com/vllm-project/vllm
+  - Hugging Face Transformers (Apache 2.0) — https://github.com/huggingface/transformers

README.md

@@ -0,0 +1,284 @@
+---
+language:
+- de
+- en
+- fr
+- es
+- ar
+- fa
+- it
+- sv
+- ru
+- zh
+license: apache-2.0
+library_name: transformers
+pipeline_tag: image-text-to-text
+tags:
+- german
+- deutsch
+- ocr
+- vision
+- document-ai
+- invoice
+- rechnung
+- structured-extraction
+- json-extraction
+- kie
+- ollama
+- vllm
+- llama-cpp
+- apache-2.0
+inference: true
+datasets:
+- neuralabs/german-synth-ocr
+- Aoschu/German_invoices_dataset_for_donut
+base_model:
+- Qwen/Qwen3.5-2B
+new_version: Keyven/german-ocr-3
+---
+
+<p align="center">
+  <img src="https://app.german-ocr.de/icon.png" alt="German-OCR-3" width="140" height="140" />
+</p>
+
+<h1 align="center">German-OCR-3</h1>
+
+<p align="center"><strong>Deutsche Vision-OCR. Kompakt. Lokal. Open Source.</strong><br/>
+<sub>Aus deutschem Dokument-Bild → strikt validiertes JSON. In unter 60 Sekunden lokal lauffähig.</sub></p>
+
+<p align="center">
+  <a href="https://german-ocr.de"><img alt="Site" src="https://img.shields.io/badge/site-german--ocr.de-3B82F6?style=flat-square&labelColor=0B1220"/></a>
+  <a href="https://ollama.com/Keyvan/german-ocr-3"><img alt="Ollama" src="https://img.shields.io/badge/Ollama-Keyvan%2Fgerman--ocr--3-F59E0B?style=flat-square&labelColor=0B1220"/></a>
+  <a href="https://github.com/Keyvanhardani/German-OCR-3-Dev"><img alt="GitHub" src="https://img.shields.io/badge/GitHub-source-181717?style=flat-square&labelColor=0B1220"/></a>
+  <a href="#license"><img alt="License: Apache 2.0" src="https://img.shields.io/badge/License-Apache_2.0-22C55E?style=flat-square&labelColor=0B1220"/></a>
+  <img alt="Language" src="https://img.shields.io/badge/lang-Deutsch-3B82F6?style=flat-square&labelColor=0B1220"/>
+  <img alt="Hallucination" src="https://img.shields.io/badge/Halluzination-0%25-22C55E?style=flat-square&labelColor=0B1220"/>
+</p>
+
+---
+
+## ⚡ At a glance
+
+<table align="center">
+  <tr>
+    <td align="center" width="180"><h2>100 %</h2><sub>Gültiges JSON</sub></td>
+    <td align="center" width="180"><h2>95 %</h2><sub>Sender korrekt</sub></td>
+    <td align="center" width="180"><h2>0 %</h2><sub>Halluzination</sub></td>
+    <td align="center" width="180"><h2>5.0 s</h2><sub>Latenz / Doc</sub></td>
+  </tr>
+</table>
+
+<p align="center"><sub>Auf <strong>200+ echten anonymisierten deutschen Rechnungen</strong> (Default-Edition, 2.7 GB)</sub></p>
+
+---
+
+## Was ist German-OCR-3?
+
+**German-OCR-3** ist eine kompakte, schnelle und voll lokal lauffähige **Vision-OCR-Distribution für deutsche Geschäftsdokumente** — Rechnungen, Briefe, Formulare, Quittungen, Bescheide. Aus dem Bild kommt **strikt validiertes JSON** nach unserem deutschen Extraktions-Schema. Ohne Cloud-Pflicht, ohne Vendor-Lock-in.
+
+Zwei Editionen, beide Apache 2.0, beide unter 3 GB:
+
+| Edition | Ollama | Größe | Zielhardware | Stärke |
+|---|---|---:|---|---|
+| **Nano** | `Keyvan/german-ocr-nano` | **1.0 GB** | CPU · Edge · Mobile | „läuft überall" |
+| **Default** ⭐ | `Keyvan/german-ocr-3` | **2.7 GB** | 4–6 GB VRAM | beste Field-Erkennung |
+
+> **Fine-tuned adapter** für deutsche Geschäftsdokument-Extraktion. Apache 2.0.
+
+---
+
+## 📊 Praxistest — 200+ echte deutsche Rechnungen (anonymisiert)
+
+<p align="center">
+  <img src="https://huggingface.co/Keyven/german-ocr-3/resolve/main/charts/02_ionos_validity.png" alt="Praxistest" width="820"/>
+</p>
+
+| Edition | Valid JSON | Sender korrekt | **Halluzination** | Latenz |
+|---|---:|---:|---:|---:|
+| `Keyvan/german-ocr-nano` | 84 % | 79 % | **0 %** | 6.6 s |
+| **`Keyvan/german-ocr-3`** ⭐ | **100 %** | **95 %** | **0 %** | **5.0 s** |
+
+**Keine "Mustermann"-Defaults.** German-OCR-3 liest echte Firma, Kundenadresse, Produkte, Beträge — statt zu raten.
+
+---
+
+## 📐 Größenvergleich
+
+<p align="center">
+  <img src="https://huggingface.co/Keyven/german-ocr-3/resolve/main/charts/01_size_vs_competitors.png" alt="Modellgrößen" width="820"/>
+</p>
+
+`german-ocr-3` (2.7 GB) ist **6× kleiner** als ein typischer 7B-OCR-VLM. Läuft auf einer **8 GB-Gaming-GPU** oder über CPU auf einem normalen Laptop.
+
+<p align="center">
+  <img src="https://huggingface.co/Keyven/german-ocr-3/resolve/main/charts/04_latency.png" alt="Latenz" width="620"/>
+</p>
+
+---
+
+## 🚀 Quickstart
+
+### Ollama (empfohlen, eine Zeile)
+
+```bash
+ollama pull Keyvan/german-ocr-3
+ollama run Keyvan/german-ocr-3 "Extrahiere die Rechnung im Bild als JSON." ./meine_rechnung.png
+```
+
+<details>
+<summary><b>Beispiel-Output (anonymisiert, aus Praxistest)</b> — klicken zum Aufklappen</summary>
+
+```json
+{
+  "document_type": "invoice",
+  "language": "de",
+  "invoice_number": "100137xXXXXX",
+  "invoice_date": "2024-01-22",
+  "due_date": "2024-01-27",
+  "sender": {
+    "name": "IONOS SE",
+    "address": "Elgendorfer Str. 57, 56410 Montabaur",
+    "vat_id": "DE81556XXX",
+    "iban": null
+  },
+  "recipient": {
+    "name": "Firma e.K.",
+    "address": "Muster Straße 32, 80335 München",
+    "customer_id": "5835XXX"
+  },
+  "line_items": [
+    {"position": 1, "description": "Mail Business 1 Liz.", "quantity": 1,
+     "unit": "Monat", "unit_price_net": 4.20, "amount_net": 4.20, "vat_rate": 19}
+  ],
+  "amount_net": 4.20,
+  "amount_vat": 0.80,
+  "amount_total": 5.00,
+  "currency": "EUR",
+  "notes": ["Entsprechend Ihrem SEPA-Lastschriftmandat ..."]
+}
+```
+
+</details>
+
+### Python (via Ollama HTTP API)
+
+```python
+import base64, json, requests
+from pathlib import Path
+
+b64 = base64.b64encode(Path("rechnung.png").read_bytes()).decode()
+resp = requests.post("http://localhost:11434/api/generate", json={
+    "model": "Keyvan/german-ocr-3",
+    "prompt": "Extrahiere die Rechnung im Bild als JSON.",
+    "images": [b64],
+    "stream": False,
+    "options": {"temperature": 0, "num_ctx": 32768},
+})
+data = json.loads(resp.json()["response"])
+print(json.dumps(data, indent=2, ensure_ascii=False))
+```
+
+### Bundle herunterladen
+
+```bash
+huggingface-cli download Keyven/german-ocr-3 --local-dir ./german-ocr-3
+# Enthält: Modelfile · JSON-Schemas · System-Prompt · GGUF-Quants · Charts
+```
+
+### llama.cpp (GGUF direkt)
+
+```bash
+llama-cli -m ./german-ocr-3/german-ocr-3-Q4_K_M.gguf \
+  --system-prompt-file ./german-ocr-3/system_prompt.txt \
+  -p "Extrahiere die Rechnung als JSON:" --temp 0
+```
+
+---
+
+## 📚 Trainings- und Evaluations-Datensätze
+
+| Datensatz | Umfang | Typ |
+|---|---|---|
+| [`neuralabs/german-synth-ocr`](https://huggingface.co/datasets/neuralabs/german-synth-ocr) | 4 500+ | Deutsche OCR-Samples (synthetisch, Apache-2.0) |
+| [`Aoschu/German_invoices_dataset_for_donut`](https://huggingface.co/datasets/Aoschu/German_invoices_dataset_for_donut) | 129 | Echte deutsche Rechnungen (Donut-Format) |
+| Eigenes synthetisches DE-Rechnungs-Set | 100 | Rechnungen mit Golden-JSON, deterministisch generiert |
+| Anonymisierter DACH-Praxistest | 200+ | Echte Rechnungen verschiedener DACH-Anbieter (intern, DSGVO) |
+
+---
+
+## 🎯 Zielgruppen
+
+- **Solo-Builder & Indies** — deutsche Dokumente lokal extrahieren, ohne Cloud-OCR-Kosten.
+- **DACH-KMU mit Datenschutz-Anspruch** — lokal / on-prem hosten.
+- **Agenturen & Studios** — Open-Source-Fundament unter der eigenen Pipeline.
+
+Wer es **gemanagt** und mit noch größeren Modellen will:
+
+> 🌐 **[german-ocr.de](https://german-ocr.de)** — gehostete deutsche OCR-API mit Premium-Modellen, höherer Genauigkeit, ohne eigene Hardware. Daten bleiben in der EU.
+
+---
+
+## ⚠️ Limitations
+
+- Optimiert für **deutsche** Dokumente — andere Sprachen keine Garantie.
+- Beste Qualität bei klaren, hochauflösenden Scans/Fotos.
+- Handschriftliche Dokumente: nur begrenzt.
+- Bei kritischen Vorgängen (Buchhaltung, Recht): **immer Human-in-the-Loop**.
+
+---
+
+## 🙏 Credit & Attribution
+
+German-OCR-3 baut auf der hervorragenden Arbeit des **Qwen-Teams bei Alibaba Group** auf. Die zugrundeliegende Vision-Language-Architektur stammt aus der **Qwen 3.5 Small Series**, veröffentlicht unter Apache License 2.0. Ohne die offene Forschung und die saubere Veröffentlichung der Qwen-Weights wäre dieses Projekt nicht möglich.
+
+- **Qwen 3.5** — https://huggingface.co/Qwen · https://qwen.ai
+- **Apache License 2.0** (Weights) — © 2025–2026 Qwen Team, Alibaba Group
+- **Qwen2.5-VL Technical Report** — [arXiv:2502.13923](https://arxiv.org/abs/2502.13923)
+
+Vollständiger Attribution-Text in [`NOTICE`](NOTICE).
+
+---
+
+## <a id="license"></a>📄 License
+
+**Apache License 2.0** für die gesamte German-OCR-3-Distribution (Modelfiles, System-Prompt, Schemas, Docs, GGUFs).
+
+---
+
+## 📑 Citation
+
+Wenn du German-OCR-3 in Forschung oder Produktion verwendest, zitiere bitte **beides** — unsere Distribution und die Qwen-Basisarbeit:
+
+```bibtex
+@misc{german_ocr_3_2026,
+  title  = {German-OCR-3: A compact German document-OCR distribution},
+  author = {Hardani, Keyvan},
+  year   = {2026},
+  url    = {https://github.com/Keyvanhardani/German-OCR}
+}
+
+@misc{qwen35_2026,
+  title        = {Qwen 3.5 Small Series},
+  author       = {{Qwen Team, Alibaba Group}},
+  year         = {2026},
+  howpublished = {\url{https://huggingface.co/Qwen}},
+  note         = {Apache License 2.0}
+}
+
+@article{qwen25vl_2025,
+  title   = {Qwen2.5-VL Technical Report},
+  author  = {{Qwen Team, Alibaba Group}},
+  journal = {arXiv preprint arXiv:2502.13923},
+  year    = {2025}
+}
+```
+
+---
+
+## 👤 Author
+
+**Keyvan Hardani**
+· Website: [keyvan.ai](https://keyvan.ai)
+· LinkedIn: [linkedin.com/in/keyvanhardani](https://linkedin.com/in/keyvanhardani)
+· GitHub: [@Keyvanhardani](https://github.com/Keyvanhardani)
+· Hosted Premium: [german-ocr.de](https://german-ocr.de)

german-ocr-3-Q4_K_M.gguf

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schemas/form.json

@@ -0,0 +1,66 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "german-ocr-3/schemas/form.json",
+  "title": "GermanOCR3 Form (Formular)",
+  "description": "Generisches Schema fuer ausgefuellte deutsche Formulare. Felder werden als Liste von Label/Value-Paaren geliefert, plus optionale Checkbox-Liste und Unterschriften.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["document_type", "language", "fields"],
+  "properties": {
+    "document_type": {"const": "form"},
+    "language": {"type": "string", "default": "de"},
+    "form_title": {"type": ["string", "null"]},
+    "form_id": {"description": "z.B. Antragsnummer / Formularkennung", "type": ["string", "null"]},
+    "issuing_authority": {"type": ["string", "null"]},
+
+    "fields": {
+      "type": "array",
+      "description": "Erkannte Label/Wert-Paare in Lesereihenfolge.",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["label", "value"],
+        "properties": {
+          "label": {"type": "string"},
+          "value": {"type": ["string", "number", "boolean", "null"]},
+          "section": {"type": ["string", "null"]},
+          "page": {"type": ["integer", "null"]}
+        }
+      }
+    },
+
+    "checkboxes": {
+      "type": "array",
+      "default": [],
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["label", "checked"],
+        "properties": {
+          "label": {"type": "string"},
+          "checked": {"type": "boolean"},
+          "section": {"type": ["string", "null"]}
+        }
+      }
+    },
+
+    "signatures": {
+      "type": "array",
+      "default": [],
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "properties": {
+          "by": {"type": ["string", "null"]},
+          "place": {"type": ["string", "null"]},
+          "date": {"type": ["string", "null"]},
+          "present": {"type": "boolean"}
+        }
+      }
+    },
+
+    "raw_text": {"type": ["string", "null"]},
+    "confidence": {"type": ["number", "null"], "minimum": 0, "maximum": 1},
+    "notes": {"type": "array", "items": {"type": "string"}, "default": []}
+  }
+}

schemas/generic_document.json

@@ -0,0 +1,107 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "german-ocr-3/schemas/generic_document.json",
+  "title": "GermanOCR3 Generic Document",
+  "description": "Allgemeines deutsches Dokument-Extraktionsschema. Felder dürfen null sein, wenn nicht eindeutig erkennbar.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["document_type", "language", "raw_text", "confidence"],
+  "properties": {
+    "document_type": {
+      "description": "z.B. invoice, receipt, letter, form, contract, id_card, other, unknown",
+      "type": ["string", "null"]
+    },
+    "language": {
+      "description": "BCP-47 Sprachcode des Dokuments (typisch 'de').",
+      "type": "string",
+      "default": "de"
+    },
+    "sender": {
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "properties": {
+        "name": {"type": ["string", "null"]},
+        "address": {"type": ["string", "null"]},
+        "email": {"type": ["string", "null"]},
+        "phone": {"type": ["string", "null"]},
+        "tax_id": {"type": ["string", "null"]},
+        "vat_id": {"type": ["string", "null"]}
+      }
+    },
+    "recipient": {
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "properties": {
+        "name": {"type": ["string", "null"]},
+        "address": {"type": ["string", "null"]},
+        "customer_id": {"type": ["string", "null"]}
+      }
+    },
+    "date": {
+      "description": "Hauptdatum des Dokuments im Format YYYY-MM-DD, falls eindeutig erkennbar.",
+      "type": ["string", "null"]
+    },
+    "reference_numbers": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["label", "value"],
+        "properties": {
+          "label": {"type": "string"},
+          "value": {"type": "string"}
+        }
+      },
+      "default": []
+    },
+    "amounts": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["label", "value"],
+        "properties": {
+          "label": {"type": "string"},
+          "value": {"type": ["number", "string"]},
+          "currency": {"type": ["string", "null"]}
+        }
+      },
+      "default": []
+    },
+    "tables": {
+      "type": "array",
+      "default": [],
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["headers", "rows"],
+        "properties": {
+          "title": {"type": ["string", "null"]},
+          "headers": {"type": "array", "items": {"type": "string"}},
+          "rows": {
+            "type": "array",
+            "items": {
+              "type": "array",
+              "items": {"type": ["string", "number", "null"]}
+            }
+          }
+        }
+      }
+    },
+    "raw_text": {
+      "description": "Roher OCR-Text, möglichst layouterhaltend, deutsche Originalschreibweise behalten.",
+      "type": ["string", "null"]
+    },
+    "confidence": {
+      "description": "Subjektive Selbsteinschätzung 0..1.",
+      "type": ["number", "null"],
+      "minimum": 0,
+      "maximum": 1
+    },
+    "notes": {
+      "type": "array",
+      "items": {"type": "string"},
+      "default": []
+    }
+  }
+}

schemas/invoice.json

@@ -0,0 +1,101 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "german-ocr-3/schemas/invoice.json",
+  "title": "GermanOCR3 Invoice (Rechnung)",
+  "description": "Schema fuer deutsche Rechnungen. Pflichtangaben gemaess UStG § 14 sind beruecksichtigt; nicht erkennbare Felder bleiben null.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["document_type", "language", "invoice_number", "invoice_date", "amount_total", "currency"],
+  "properties": {
+    "document_type": {"const": "invoice"},
+    "language": {"type": "string", "default": "de"},
+
+    "invoice_number": {"type": ["string", "null"]},
+    "invoice_date": {
+      "description": "Rechnungsdatum YYYY-MM-DD",
+      "type": ["string", "null"]
+    },
+    "delivery_date": {
+      "description": "Liefer-/Leistungsdatum YYYY-MM-DD",
+      "type": ["string", "null"]
+    },
+    "due_date": {
+      "description": "Faelligkeitsdatum YYYY-MM-DD",
+      "type": ["string", "null"]
+    },
+
+    "sender": {
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "properties": {
+        "name": {"type": ["string", "null"]},
+        "address": {"type": ["string", "null"]},
+        "email": {"type": ["string", "null"]},
+        "phone": {"type": ["string", "null"]},
+        "tax_id": {"description": "Steuernummer", "type": ["string", "null"]},
+        "vat_id": {"description": "USt-IdNr / VAT ID (DE...)", "type": ["string", "null"]},
+        "iban": {"type": ["string", "null"]},
+        "bic": {"type": ["string", "null"]},
+        "bank": {"type": ["string", "null"]}
+      }
+    },
+    "recipient": {
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "properties": {
+        "name": {"type": ["string", "null"]},
+        "address": {"type": ["string", "null"]},
+        "customer_id": {"type": ["string", "null"]},
+        "vat_id": {"type": ["string", "null"]}
+      }
+    },
+
+    "line_items": {
+      "type": "array",
+      "default": [],
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["description", "amount_net"],
+        "properties": {
+          "position": {"type": ["integer", "null"]},
+          "article_number": {"type": ["string", "null"]},
+          "description": {"type": "string"},
+          "quantity": {"type": ["number", "null"]},
+          "unit": {"type": ["string", "null"]},
+          "unit_price_net": {"type": ["number", "null"]},
+          "amount_net": {"type": ["number", "null"]},
+          "vat_rate": {"description": "Prozent, z.B. 19 oder 7", "type": ["number", "null"]}
+        }
+      }
+    },
+
+    "amount_net": {"type": ["number", "null"]},
+    "amount_vat": {"type": ["number", "null"]},
+    "amount_total": {"type": ["number", "null"]},
+    "currency": {
+      "type": ["string", "null"],
+      "description": "ISO-4217, typisch EUR"
+    },
+
+    "vat_breakdown": {
+      "type": "array",
+      "default": [],
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["rate", "net", "vat"],
+        "properties": {
+          "rate": {"type": "number"},
+          "net": {"type": "number"},
+          "vat": {"type": "number"}
+        }
+      }
+    },
+
+    "payment_terms": {"type": ["string", "null"]},
+    "notes": {"type": "array", "items": {"type": "string"}, "default": []},
+    "raw_text": {"type": ["string", "null"]},
+    "confidence": {"type": ["number", "null"], "minimum": 0, "maximum": 1}
+  }
+}

schemas/letter.json

@@ -0,0 +1,73 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "german-ocr-3/schemas/letter.json",
+  "title": "GermanOCR3 Letter (Brief)",
+  "description": "Schema fuer deutsche Geschaefts- oder Behoerdenbriefe (DIN-5008-naher Aufbau).",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["document_type", "language", "subject", "body"],
+  "properties": {
+    "document_type": {"const": "letter"},
+    "language": {"type": "string", "default": "de"},
+
+    "sender": {
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "properties": {
+        "name": {"type": ["string", "null"]},
+        "address": {"type": ["string", "null"]},
+        "email": {"type": ["string", "null"]},
+        "phone": {"type": ["string", "null"]}
+      }
+    },
+    "recipient": {
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "properties": {
+        "name": {"type": ["string", "null"]},
+        "address": {"type": ["string", "null"]}
+      }
+    },
+
+    "place": {"type": ["string", "null"]},
+    "date": {"description": "Briefdatum YYYY-MM-DD", "type": ["string", "null"]},
+    "reference": {
+      "description": "Aktenzeichen / Ihr Zeichen / Unser Zeichen.",
+      "type": ["object", "null"],
+      "additionalProperties": false,
+      "properties": {
+        "ihr_zeichen": {"type": ["string", "null"]},
+        "ihre_nachricht_vom": {"type": ["string", "null"]},
+        "unser_zeichen": {"type": ["string", "null"]},
+        "unsere_nachricht_vom": {"type": ["string", "null"]}
+      }
+    },
+
+    "subject": {"type": ["string", "null"]},
+    "salutation": {"type": ["string", "null"]},
+    "body": {
+      "description": "Kompletter Brieftext, Absaetze mit \\n\\n getrennt.",
+      "type": ["string", "null"]
+    },
+    "closing": {"type": ["string", "null"]},
+    "signatory": {"type": ["string", "null"]},
+    "enclosures": {"type": "array", "items": {"type": "string"}, "default": []},
+
+    "deadlines_mentioned": {
+      "type": "array",
+      "default": [],
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "properties": {
+          "date": {"type": ["string", "null"]},
+          "context": {"type": ["string", "null"]}
+        }
+      }
+    },
+
+    "raw_text": {"type": ["string", "null"]},
+    "confidence": {"type": ["number", "null"], "minimum": 0, "maximum": 1},
+    "notes": {"type": "array", "items": {"type": "string"}, "default": []}
+  }
+}