Update README.md

README.md

@@ -32,7 +32,7 @@ The original and full **LEGI** dataset includes:
 - All **73 official codes in force**, and **29 repealed codes**.
 - And more ...
   
-In this version, only versions of articles that are currently **in force** (`VIGUEUR`) or **abrogated deferred** (`ABROGE_DIFF`) are included.
+In this version, only versions of articles that are currently **in force** (`VIGUEUR`), **modified** from their original in force version ('MODIFIE')  or **abrogated deferred** (`ABROGE_DIFF`) are included.
 
 Each article is chunked and vectorized using the [`BAAI/bge-m3`](https://huggingface.co/BAAI/bge-m3) embedding model, enabling use in **semantic search**, **retrieval-augmented generation (RAG)**, and **legal research** systems for example.
 
@@ -45,12 +45,13 @@ The dataset is provided in **Parquet format** and includes the following columns
 | Column Name         | Type     | Description                                                                 |
 |---------------------|----------|-----------------------------------------------------------------------------|
 | `chunk_id`          | `str`    | Unique chunk identifier.                                                    |
-| `cid`               | `str`    | LEGI article source identifier.                                             |
-| `chunk_number`      | `int`    | Index of the chunk within the article.                                      |
+| `doc_id`            | `str`    | LEGI article source identifier.                                             |
+| `chunk_index`       | `int`    | Index of the chunk within its original document. Starting from 1.           |
+| `chunk_xxh64`       | `str`    | XXH64 hash of the `chunk_text` value.                                       |
 | `nature`            | `str`    | Nature of the text (e.g., `Article`).                                       |
 | `category`          | `str`    | Type of legislative document (e.g., `LOI`, `DECRET`, `ARRETE`, etc.).       |
 | `ministry`          | `str`    | Ministry responsible for the publication, if applicable.                    |
-| `status`            | `str`    | Status of the article: `VIGUEUR` (in force) or `ABROGE_DIFF` (abrogated deferred).|
+| `status`            | `str`    | Status of the article: `VIGUEUR` (in force), 'MODIFIE' (modified) or `ABROGE_DIFF` (abrogated deferred).|
 | `title`             | `str`    | Short title of the legislative document.                                    |
 | `full_title`        | `str`    | Full formal title of the text.                                              |
 | `subtitles`         | `str`    | Subtitle(s) indicating article grouping or section.                         |
@@ -70,12 +71,13 @@ The dataset is provided in **Parquet format** and includes the following columns
 The following fields were extracted and/or transformed from the original source:
 
 - **Basic fields**:
-  - `cid`, `nature`, `category`, ,`ministry`,`status`, `title`, `full_title`, `subtitles`, `number`, and `start_date`, `end_date` are extracted directly from the metadata of each article.
+  - `doc_id`, `nature`, `category`, ,`ministry`,`status`, `title`, `full_title`, `subtitles`, `number`, and `start_date`, `end_date` are extracted directly from the metadata of each article.
 
 - **Generated fields**:
-  - `chunk_id`: a generated unique identifier combining the `cid` and `chunk_number`.
-  - `chunk_number`: index of the chunk from the original decision.
-
+  - `chunk_id`: a generated unique identifier of the chunk, combining the `doc_id` and `chunk_index`.
+  - `chunk_index`: is the index of the chunk of a same article. Each article has an unique `doc_id`.
+  - `chunk_xxh64`: is the xxh64 hash of the `chunk_text` value. It is useful to determine if the `chunk_text` value has changed from a version to another.
+    
 - **Textual fields**:
   - `nota`: additional notes, also directly extracted from metadatas.
   - `text`: chunk of the main text content.