update readme

README.md

@@ -8,7 +8,8 @@ tags:
 ---
 **Dataset Info:**
 
-This dataset consists of oral history content collected from the Istorima archive, including transcribed interviews and associated metadata.The material reflects personal narratives and life stories, primarily in Greek, covering a wide range of social, cultural, and historical topics.
+This dataset consists of oral history content collected from the Istorima archive, including transcribed interviews and associated metadata. The material reflects personal narratives and life stories, primarily in Greek, covering a wide range of social, cultural, and historical topics.
+
 
 **Metadata Info:**
 
@@ -19,6 +20,28 @@ The dataset also includes numerical and boolean features such as duration_minute
 as well as a language field indicating the interview language. 
 
 
+**Metadata Field Descriptions:**
+
+| Field | Type | Description |
+|---|---|---|
+| `id` | int | Unique numeric identifier for the interview, as assigned by the Istorima archive (ranges from 9790 to 267770, not sequential). |
+| `title` | string | Title of the interview, typically a quote or summary phrase chosen by the editorial team. |
+| `summary` | string | Editorial description of the interview content — a paragraph summarizing the topics, people, and events discussed. |
+| `transcription` | string | Full transcribed dialogue of the interview in the format `[Speaker Initials]: text`, with each speaker turn on its own line separated by blank lines. Empty string for the 297 on-demand interviews that have no public transcript. |
+| `speaker_name` | string | Name of the interviewee (the person telling their story). For anonymous speakers (`is_age_restricted` or by request), this is a pseudonym or alias, not their real name. |
+| `researcher_name` | string | Name of the Istorima researcher who conducted and recorded the interview. |
+| `themes` | string | Broad thematic categories assigned to the interview (e.g., `Καθημερινή Ζωή, Διατροφή και Συνταγές`), comma-separated. These are high-level editorial classifications from a controlled vocabulary. |
+| `date` | string | Date the interview was conducted, in `YYYY-MM-DD` format. Ranges mostly from 2019 to 2024, with a handful of historical recordings dating back to 1943. |
+| `tags` | string | Specific keyword tags describing the interview content (e.g., `Γιαγιά, Μαγειρική, Ποντιακά Φαγητά`), comma-separated. More granular than themes — typically 5–25 tags per interview. |
+| `geonames` | string | Geographic locations referenced in the interview (places the story talks about, not where it was recorded), comma-separated in the format `Place Name (latitude, longitude)`. Sourced from the GeoNames database. |
+| `interview_place` | string | Free-text description of where the interview was physically recorded (e.g., `Λόφος Λειβάδας`, `Θεσσαλονίκη`). This is the recording location, not the places discussed in the story. |
+| `published_at` | string | Date the interview was published on the Istorima archive website, in `YYYY-MM-DD` format. Typically 1–2 years after the interview date. |
+| `duration_minutes` | float | Duration of the interview audio/video recording in minutes (e.g., `38.52` means 38 minutes and 31 seconds). |
+| `language` | string | ISO language code of the interview, almost always `el` (Greek). |
+| `is_age_restricted` | bool | Whether the interview contains sensitive content requiring age verification to access on the website (2,392 interviews). The transcription is still included in the dataset. |
+| `is_on_demand` | bool | Whether the interview is available only on request and has no public transcript (297 interviews). These entries have an empty `transcription` field. |
+
+
 **Dataset Statistics:**
 
 Words:
@@ -27,8 +50,10 @@ Words:
 Tokens:
 138,933,365
 
+
 **License:**
 This dataset is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0). Any commercial use requires prior written permission from Istorima. All intellectual property rights remain with Istorima.
 
+
 **Dataset Moved:**
 This dataset is now hosted by the Mozilla Data Collective. Please use the official link below for the most up-to-date version: