| ---
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| license: cc-by-sa-4.0
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| language:
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| - el
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| pretty_name: EELLAK Network Articles
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| tags:
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| - greek
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| - open-source
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| - open-government
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| - open-data
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| - open-content
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| - creative-commons
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| - ellak
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| - eellak
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| - wordpress
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| - blog
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| size_categories:
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| - 1K<n<10K
|
| ---
|
|
|
| # EELLAK Network Articles - Άρθρα από το δίκτυο ιστοτόπων ΕΕΛ/ΛΑΚ
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|
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| **Dataset Info**
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|
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| This dataset is a structured snapshot of the multi-site WordPress network operated by **EELLAK** (Εταιρεία Ελεύθερου Λογισμικού / Λογισμικού Ανοιχτού Κώδικα - the Greek Free / Open Source Software Society). EELLAK runs a constellation of 23 thematic subdomains under `ellak.gr`, each of which acts as a long-running editorial blog dedicated to a specific facet of the open-technology and open-knowledge ecosystem in Greece: open-source software, open government, open data, open educational resources, open standards, open hardware, open content, Creative Commons, data privacy, free public WiFi, open design, and related civic-tech topics.
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|
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| The dataset contains **7,284 articles** spanning **2008-05-12 - 2026-03-19**, covering the full editorial output of these sites since the foundation of the EELLAK web network. Each row corresponds to a single WordPress post and includes the article body in Markdown plus the originating site, publication metadata, and authorship information.
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|
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| The 23 sites covered (and their thematic focus) are:
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|
|
| | Subdomain | Articles | Focus |
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| | --- | ---: | --- |
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| | `opensource.ellak.gr` | 1,440 | Free / open-source software news |
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| | `opengov.ellak.gr` | 816 | Open government and civic-tech |
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| | `edu.ellak.gr` | 683 | Open education in primary / secondary schools |
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| | `mycontent.ellak.gr` | 619 | Open content and digital publishing |
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| | `creativecommons.ellak.gr` | 498 | Creative Commons Greece chapter |
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| | `privacy.ellak.gr` | 436 | Data protection and privacy |
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| | `opendata.ellak.gr` | 433 | Open public data |
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| | `eellak.ellak.gr` | 377 | EELLAK organizational news |
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| | `openstandards.ellak.gr` | 346 | Open standards and interoperability |
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| | `gfoss.ellak.gr` | 337 | GFOSS general open-source advocacy |
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| | `openbusiness.ellak.gr` | 273 | Open business models |
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| | `openhardware.ellak.gr` | 263 | Open hardware |
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| | `oer.ellak.gr` | 188 | Open educational resources |
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| | `openwifi.ellak.gr` | 138 | Open / municipal WiFi initiatives |
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| | `legal.ellak.gr` | 118 | Open-source legal affairs and IP |
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| | `advisory.ellak.gr` | 82 | Advisory groups and policy work |
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| | `opendesign.ellak.gr` | 82 | Open design |
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| | `scientix.ellak.gr` | 56 | Science education (Scientix programme) |
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| | `odi.ellak.gr` | 54 | Open Data Institute (Greek node) |
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| | `obs.ellak.gr` | 32 | Observatory / monitoring |
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| | `mydata.ellak.gr` | 7 | Personal data sovereignty |
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| | `mathe.ellak.gr` | 5 | Public-awareness mini-site |
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| | `publicfiscal.ellak.gr` | 1 | Public-finance transparency |
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|
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| The text is in Modern Greek, with occasional English passages (e.g. quoted upstream announcements) and bilingual titles in the `opendesign.ellak.gr` posts.
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|
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| **Metadata Info**
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|
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| The parquet has one row per article. The schema is:
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|
|
| | Column | Type | Description |
|
| | --------------- | --------------- | -------------------------------------------------------------------------------------------------------------------- |
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| | `site` | string | Subdomain of `ellak.gr` where the article was published (one of 23 values). |
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| | `id` | string | WordPress numeric post id, unique within `site`. The pair `(site, id)` is the primary key of the dataset. |
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| | `post_title` | string | Article title as published. |
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| | `post_name` | string | URL-encoded slug of the article (the WordPress `post_name` field; appears in the canonical URL). |
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| | `post_date` | timestamp[us] | Date/time the article was originally published, in Athens local time (`Europe/Athens`). |
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| | `post_modified` | timestamp[us] | Date/time of the most recent edit, in Athens local time. |
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| | `post_author` | string | WordPress numeric author id of the publishing account (opaque key; usernames are not included). |
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| | `guid` | string | WordPress canonical permalink for the post. See *Known Data Quality Notes* for cross-posted articles. |
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| | `content` | string | Markdown body of the article. YAML front-matter has been stripped; non-breaking spaces have been normalized. |
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| | `word_count` | int64 | Whitespace-separated word count of `content`. |
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| | `token_count` | int64 | Subword token count of `content` under the `nlpaueb/bert-base-greek-uncased-v1` WordPiece tokenizer. |
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|
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| **Note on Timestamps**
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|
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| `post_date` and `post_modified` are stored as timezone-naive `timestamp[us]` values, but the wall-clock values represent **Athens local time** (`Europe/Athens` - EET in winter, EEST in summer). This matches the local time configured on the source WordPress instances. To work with these timestamps in a timezone-aware way, localize them on read, e.g.:
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|
|
| ```python
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| import pandas as pd
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| df = pd.read_parquet("eellak.parquet")
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| df["post_date"] = df["post_date"].dt.tz_localize(
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| "Europe/Athens", ambiguous="NaT", nonexistent="shift_forward"
|
| )
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| ```
|
|
|
| **Dataset Statistics**
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|
|
| * Articles (rows): 7.284
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| * Sites covered: 23
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| * Coverage (`post_date`): 2008-05-12 - 2026-03-19
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| * Size: 25,10 MB
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| * Words: 4.255.024 (counted on `content`, whitespace-separated)
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| * Tokens: 8.497.146 (counted on `content` with the `nlpaueb/bert-base-greek-uncased-v1` WordPiece tokenizer, no special tokens, no truncation)
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| The fields included in the word/token count are: `content`. Identifiers, URLs, slugs, timestamps, titles, and author fields are excluded.
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|
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| **Note on Content Formatting**
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| The `content` field carries the article body in **Markdown**, as it was rendered from the original WordPress posts. A few formatting choices are worth noting:
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|
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| - **YAML front matter has been stripped.** Each source `.md` file originally began with a small YAML block (`title`, `date`, `modified`, `author`, `guid`, `site`) that fully duplicated the parquet metadata columns. This block has been removed so that `content` contains only the body text.
|
| - **Non-breaking spaces (U+00A0) have been normalized to regular spaces.** The WordPress visual editor often inserts NBSP characters during composition; 32.192 such characters across 4.192 articles were replaced with regular spaces. This affects whitespace only and does not change any visible text.
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| - **WordPress shortcodes are preserved verbatim.** Tokens such as `[featured-video-plus]`, `[wikiful url=...]`, `[caption]`, `[gallery]`, etc. are kept as-is. They reflect dynamic content (embedded videos, galleries, plugin output) that is not resolvable from the static export. See *Known Data Quality Notes*.
|
| - **Inline HTML is preserved verbatim.** Some posts contain inline `<table>`, `<iframe>`, `<sup>`/`<sub>` and similar fragments authored by the editors; these are kept as written. Most "HTML-looking" tags found by a tag-shape regex are actually Markdown autolinks of the form `<https://example.com>`, which Markdown explicitly supports.
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| - **Markdown links, headings, lists and emphasis are preserved.** No flattening to plain text is performed, so downstream consumers that need raw text can apply their own Markdown parser.
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|
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| **Known Data Quality Notes**
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|
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| The dataset reflects the source as faithfully as possible. The following quirks exist on the live `ellak.gr` sites and have therefore been **preserved**, not silently corrected:
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|
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| - **Cross-posted articles.** 43 articles (86 rows) are mirrored across two subdomains of the EELLAK network: the same canonical `guid` appears once under its origin site (typically `oer.ellak.gr` or `opensource.ellak.gr`) and once under `edu.ellak.gr`. Each mirror has its own `(site, id)` and is treated as a separate row. Users who want a deduplicated view at the article level can group by `guid`.
|
| - **`post_modified` earlier than `post_date`.** 358 rows have `post_modified < post_date`. This is a known WordPress behavior for back-dated, imported, or migrated posts (e.g. articles re-published after the WordPress instance was upgraded). The values are taken as-is from the source database.
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| - **Very short articles.** 16 articles have fewer than 5 words. The vast majority are `opendesign.ellak.gr` portfolio entries whose body on the live site is just an embedded video shortcode (`[featured-video-plus]`); a handful of others are placeholder posts. They are kept for completeness because they exist as published articles on the source sites.
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| - **WordPress shortcodes inside `content`.** Posts that rely on plugins (galleries, embedded videos, dynamic widgets) contain unresolved shortcodes. Resolving them would require executing the original WordPress runtime against the original databases.
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|
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| **Usage**
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|
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| This dataset is useful for:
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|
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| - Natural Language Processing (NLP) tasks for Modern Greek, especially in the **technology, civic-tech, open-government, and open-source policy** registers
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| - Building Greek language models, lexicons, or domain-adapted embeddings for the open-technology and digital-rights domain
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| - Topic modeling, named-entity recognition, and event extraction over a long-running, thematically coherent corpus (2008–2026)
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| - Diachronic studies of Greek public discourse on open data, open government, digital privacy, and free software
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| - Information-retrieval and Q&A systems over the EELLAK editorial archive
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|
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| **License**
|
|
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| This dataset is licensed under the [Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)](https://creativecommons.org/licenses/by-sa/4.0/) license. EELLAK is the publisher of the source content and authorizes its redistribution under this license. When using this dataset, please attribute:
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| > *EELLAK Network Articles*, glossAPI (EELLAK), derived from the network of `ellak.gr` editorial sites of the Greek Free / Open Source Software Society, licensed under CC BY-SA 4.0.
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| **Contact**
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| For feedback contact: glossapi.team@eellak.gr
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|
|
