| --- |
| extra_gated_prompt: Please provide the following details to gain access to this dataset. |
| extra_gated_fields: |
| Reason for use: text |
| Project / Repository / Company URL: text |
|
|
| license: cc-by-4.0 |
| language: |
| - el |
| multilinguality: |
| - monolingual |
| task_categories: |
| - text-generation |
| - fill-mask |
| - text-classification |
| - summarization |
| tags: |
| - legal |
| - government |
| - public-administration |
| - greek |
| - transparency |
| - diavgeia |
| - ocr |
| pretty_name: Diavgeia — Greek Government Transparency Decisions |
| size_categories: |
| - 1M<n<10M |
| --- |
| |
| # Diavgeia — Greek Government Transparency Decisions |
|
|
| ## Dataset Info |
|
|
| This dataset contains the full text and metadata of public-sector decisions |
| (*αποφάσεις / πράξεις*) published on **Diavgeia** ([diavgeia.gov.gr](https://diavgeia.gov.gr/)), |
| the Greek government's transparency portal. Since 2010 (Law 3861/2010), every |
| Greek public entity is legally required to publish its administrative acts — |
| budget commitments, expenditure approvals, contracts, appointments, regulatory |
| acts, and more — on Diavgeia, each identified by a unique **ADA** |
| (*Αριθμός Διαδικτυακής Ανάρτησης*). |
|
|
| Each record corresponds to a single decision. The original PDF document was |
| collected together with its structured metadata, and the document body was |
| extracted and converted to clean **Markdown** text following the glossAPI |
| processing pipeline. |
|
|
| This dataset was produced as part of the **glossAPI** project of |
| **EELLAK (Open Technologies Alliance)**, which builds high-quality, openly |
| licensed Greek-language text corpora for AI/NLP research, linguistic analysis, |
| and open data reuse. |
|
|
| ## Source and Collection |
|
|
| - **Source:** Diavgeia OpenData API — `https://diavgeia.gov.gr/opendata/search` |
| - **Document endpoint:** `https://diavgeia.gov.gr/doc/{ADA}` |
| - **Collection period:** January–February 2026 |
| - **Identifier:** each decision is keyed by its `ADA` |
| - **Original format:** PDF + JSON metadata, OCR/text-extracted to Markdown |
|
|
| The raw harvest comprised roughly **3.1 million decision documents** |
| (~1.26 TB of PDFs). This release publishes the **1,840,305** records that were |
| successfully extracted into clean Markdown text and passed quality filtering. |
|
|
| > ### Important note on temporal coverage |
| > |
| > The Diavgeia OpenData search API silently applies a **default ~6-month |
| > rolling window** on both `submissionTimestamp` and `issueDate` when no |
| > explicit date parameters are supplied. As a result, this collection is |
| > concentrated in the **~6-month window preceding the scrape** (approximately |
| > **mid-2025 to early 2026**), rather than the complete 2010–present archive |
| > (estimated at ~70M+ decisions). Older decisions remain reachable through the |
| > API only by walking the `from_issue_date` parameter in ~6-month increments. |
| > Users should treat this dataset as a **large recent snapshot**, not a full |
| > historical census. See *Limitations* below. |
|
|
| ## Dataset Structure |
|
|
| The dataset is provided as **Parquet** with a single `train` split. |
|
|
| | Column | Type | Description | |
| | --------------- | ------ | --------------------------------------------------------------------------- | |
| | `id` | string | The decision's unique **ADA** (`Αριθμός Διαδικτυακής Ανάρτησης`) | |
| | `markdown_text` | string | The extracted document body, converted to clean Markdown text | |
| | `metadata_json` | string | A JSON string with the decision's structured metadata (schema below) | |
|
|
| ### `metadata_json` schema |
| |
| The `metadata_json` field is a JSON-encoded object containing the official |
| Diavgeia metadata for the decision: |
|
|
| | Field | Description | |
| | --------------------- | ---------------------------------------------------------------------- | |
| | `subject` | Title / subject of the decision (`θέμα`) | |
| | `protocolNumber` | Internal protocol number of the issuing body | |
| | `issueDate` | Issue date, Unix epoch in **milliseconds** | |
| | `organizationId` | ID of the issuing organization / public entity | |
| | `signerIds` | List of IDs of the signer(s) | |
| | `unitIds` | List of organizational unit IDs | |
| | `decisionTypeId` | Decision type code (see *Decision Types* below) | |
| | `thematicCategoryIds` | List of thematic category IDs | |
| | `extraFieldValues` | Type-specific structured fields (e.g. financial year, amounts, CPV, KAE) | |
|
|
| > Note: dates are stored as **milliseconds since the Unix epoch**. To convert in |
| > Python: `datetime.utcfromtimestamp(issueDate / 1000)`. |
|
|
| ### Example usage |
|
|
| ```python |
| import json |
| from datasets import load_dataset |
| |
| ds = load_dataset("glossAPI/diavgeia", split="train") |
| |
| row = ds[0] |
| print(row["id"]) # e.g. "ΨΓΠ9469ΗΡ8-ΧΚ5" |
| print(row["markdown_text"][:500]) |
| |
| meta = json.loads(row["metadata_json"]) |
| print(meta["subject"], meta["decisionTypeId"], meta["issueDate"]) |
| ``` |
|
|
| ## Decision Types (Categorizations) |
|
|
| Diavgeia organizes decisions into a hierarchical taxonomy. Our research on the |
| API identified **43 decision types in total** — **35 with documents** and |
| **8 empty parent categories** (organizational nodes with no documents of their |
| own: `2.4.1`, `2.4.2`, `2.4.3`, `2.4.4`, `2.4.5`, `2.4.6`, `2.4.7`, `2.4.8`). |
|
|
| **34 decision types** are represented in this dataset. The distribution is |
| highly skewed — the top 3 types account for roughly two-thirds of all records. |
| The table below shows the main types observed, with their share of the |
| collected corpus: |
|
|
| | Type code | Description (Greek) | Approx. share | |
| | --------- | ------------------------------------------- | ------------- | |
| | Β.2.2 | Ανάληψη Υποχρέωσης | ~33.8% | |
| | Β.1.3 | Πράξη μεταβολής Ανθρώπινου Δυναμικού | ~21.8% | |
| | 2.4.7.1 | Λοιπές ατομικές διοικητικές πράξεις | ~12.3% | |
| | Β.2.1 | Ανάθεση / Κατακύρωση | ~7.2% | |
| | Α.2 | Κανονιστική Πράξη | ~5.6% | |
| | Δ.1 | Σύμβαση | ~5.0% | |
| | Γ.3.4 | Πράξη ΟΤΑ (λοιπές ατομικές) | ~4.6% | |
| | 2.4.6.1 | Αποφάσεις / Πράξεις Συλλογικών Οργάνων | ~2.6% | |
| | Β.1.1 | Πράξη Διορισμού / Πρόσληψης | ~2.6% | |
| | Γ.2 | Πράξη ΟΤΑ (οικονομικές) | ~1.1% | |
| | Δ.2.2 | Εντολή Πληρωμής / Κατακύρωση | ~0.8% | |
| | Β.1.2 | Λύση Υπαλληλικής Σχέσης | ~0.7% | |
| | Δ.2.1 | Δαπάνη / Περίληψη Διακήρυξης | ~0.5% | |
| | Ε.4 | Περίληψη Διακήρυξης / Αναπτυξιακού Νόμου | ~0.2% | |
| | Γ.3.1 | Προκήρυξη Πλήρωσης Θέσεων | ~0.2% | |
| | Γ.3.2 | Πίνακες Επιτυχόντων / Κατάταξης | <0.2% | |
| | — | *plus ~18 additional long-tail types* | ~0.9% | |
|
|
| <details> |
| <summary>Full taxonomy of decision types found in the API (35 with documents)</summary> |
|
|
| `Β.2.2`, `Β.1.3`, `2.4.7.1`, `Β.2.1`, `Α.2`, `Δ.1`, `Γ.3.4`, `2.4.6.1`, |
| `Β.1.1`, `Γ.2`, `Δ.2.2`, `Β.1.2`, `Δ.2.1`, `Ε.4`, `Γ.3.1`, `Γ.3.2`, `Β.3`, |
| `Β.5`, `Β.4`, `Γ.3.3`, `Γ.3.5`, `100`, `Α.3`, `Ζ.1`, `Ε.1`, `Ε.2`, `Ε.3`, |
| `Α.4`, `Α.5`, `Α.7`, `Α.1.2`, `Γ.3.6`, `Α.6`, `Α.1.1`, `Β.6` |
|
|
| </details> |
|
|
| ## Dataset Statistics |
|
|
| Counts cover the `markdown_text` field, following the glossAPI convention. |
|
|
| - **Records (rows):** 1,840,305 |
| - **Size on disk:** ~3.2 GB (Parquet) |
| - **Decision types represented:** 34 |
| - **Document length (`markdown_text`):** ranges from ~150 to ~6 million characters |
| - **Words:** _to be computed (whitespace-separated, on `markdown_text`)_ |
| - **Tokens:** _to be computed (`nlpaueb/bert-base-greek-uncased-v1` WordPiece tokenizer, no special tokens, no truncation)_ |
|
|
| ## Intended Uses |
|
|
| - Pre-training and fine-tuning of Greek-language models |
| - Domain adaptation for legal / administrative / public-sector Greek |
| - Text classification (e.g. by decision type or thematic category) |
| - Summarization and information extraction from administrative documents |
| - Linguistic and computational-social-science research on Greek public administration |
|
|
| ## Limitations and Biases |
|
|
| - **Temporal coverage:** concentrated in a ~6-month recent window (see note |
| above); not a complete historical archive of Diavgeia. |
| - **Type skew:** financial/administrative types (`Β.2.2`, `Β.1.3`, `2.4.7.1`) |
| dominate, and many of these are highly **templated/boilerplate** documents. |
| This may bias models toward repetitive administrative language. |
| - **OCR / extraction noise:** text is derived from PDFs and may contain OCR |
| artifacts, broken character encodings, table-flattening, or layout loss — |
| particularly in scanned or image-based documents. |
| - **Personal data:** decisions are official public-transparency records and may |
| contain personal data (names, IDs) that were lawfully published by the issuing |
| bodies. Use responsibly and in compliance with applicable law (incl. GDPR). |
| - **Coverage gaps:** ~3.1M documents were harvested; this release contains the |
| subset that was successfully converted to clean text. |
|
|
| ## License |
|
|
| This dataset is released under the **Creative Commons Attribution 4.0 |
| International (CC BY-4.0)** license. The underlying decisions are official public |
| documents published on Diavgeia under the Greek transparency framework. |
|
|
| ## Citation |
|
|
| If you use this dataset, please cite: |
|
|
| ```bibtex |
| @misc{glossapi_diavgeia, |
| title = {Diavgeia — Greek Government Transparency Decisions}, |
| author = {{glossAPI Team, EELLAK (Open Technologies Alliance)}}, |
| year = {2026}, |
| howpublished = {Hugging Face Datasets}, |
| url = {https://huggingface.co/datasets/glossAPI/diavgeia} |
| } |
| ``` |
|
|
| ## Acknowledgements |
|
|
| - **Diavgeia** — Greek transparency portal: [https://diavgeia.gov.gr](https://diavgeia.gov.gr) |
| - **OpenData API**: [https://diavgeia.gov.gr/api/help](https://diavgeia.gov.gr/api/help) |
|
|
| ## Contact |
|
|
| For feedback contact: glossapi.team@eellak.gr |
|
|
