Add metadata to dataset card

Add metadata to dataset card.

README.md

@@ -320,6 +320,21 @@ language:
 - zgh
 - zh
 - zu
+license:
+- cc-by-sa-3.0
+- gfdl
+task_categories:
+- text-generation
+- fill-mask
+task_ids:
+- language-modeling
+- masked-language-modeling
+size_categories:
+- n<1K
+- 1K<n<10K
+- 10K<n<100K
+- 100K<n<1M
+- 1M<n<10M
 configs:
 - config_name: 20230701.ca
   data_files:
@@ -569,3 +584,161 @@ language_bcp47:
 - zh-min-nan
 - zh-yue
 ---
+
+# Dataset Card for Wikimedia Wikipedia
+
+## Table of Contents
+- [Table of Contents](#table-of-contents)
+- [Dataset Description](#dataset-description)
+  - [Dataset Summary](#dataset-summary)
+  - [Supported Tasks and Leaderboards](#supported-tasks-and-leaderboards)
+  - [Languages](#languages)
+- [Dataset Structure](#dataset-structure)
+  - [Data Instances](#data-instances)
+  - [Data Fields](#data-fields)
+  - [Data Splits](#data-splits)
+- [Dataset Creation](#dataset-creation)
+  - [Curation Rationale](#curation-rationale)
+  - [Source Data](#source-data)
+  - [Annotations](#annotations)
+  - [Personal and Sensitive Information](#personal-and-sensitive-information)
+- [Considerations for Using the Data](#considerations-for-using-the-data)
+  - [Social Impact of Dataset](#social-impact-of-dataset)
+  - [Discussion of Biases](#discussion-of-biases)
+  - [Other Known Limitations](#other-known-limitations)
+- [Additional Information](#additional-information)
+  - [Dataset Curators](#dataset-curators)
+  - [Licensing Information](#licensing-information)
+  - [Citation Information](#citation-information)
+  - [Contributions](#contributions)
+
+## Dataset Description
+
+- **Homepage:** [https://dumps.wikimedia.org](https://dumps.wikimedia.org)
+- **Repository:**
+- **Paper:**
+- **Point of Contact:**
+
+### Dataset Summary
+
+Wikipedia dataset containing cleaned articles of all languages.
+
+The dataset is built from the Wikipedia dumps (https://dumps.wikimedia.org/)
+with one subset per language, each conatining a single train split.
+
+Each example contains the content of one full Wikipedia article with cleaning to strip
+markdown and unwanted sections (references, etc.).
+
+
+All language subsets have already been processed for recent dump, and you can load them per date and language this way:
+```python
+from datasets import load_dataset
+
+load_dataset("wikipedia", "20231101.en")
+```
+
+### Supported Tasks and Leaderboards
+
+The dataset is generally used for Language Modeling.
+
+### Languages
+
+You can find the list of languages here: https://meta.wikimedia.org/wiki/List_of_Wikipedias
+
+## Dataset Structure
+
+### Data Instances
+
+An example looks as follows:
+```
+{'id': '1',
+ 'url': 'https://simple.wikipedia.org/wiki/April',
+ 'title': 'April',
+ 'text': 'April is the fourth month...'
+}
+```
+
+### Data Fields
+
+The data fields are the same among all configurations:
+- `id` (`str`): ID of the article.
+- `url` (`str`): URL of the article.
+- `title` (`str`): Title of the article.
+- `text` (`str`): Text content of the article.
+
+### Data Splits
+
+All configurations contain a single `train` split.
+
+## Dataset Creation
+
+### Curation Rationale
+
+[More Information Needed]
+
+### Source Data
+
+#### Initial Data Collection and Normalization
+
+The dataset is built from the Wikipedia dumps: https://dumps.wikimedia.org
+
+You can find the full list of languages and dates here: https://dumps.wikimedia.org/backup-index.html
+
+The articles have been parsed using the [`mwparserfromhell`](https://mwparserfromhell.readthedocs.io) tool.
+
+#### Who are the source language producers?
+
+[More Information Needed]
+
+### Annotations
+
+#### Annotation process
+
+[More Information Needed]
+
+#### Who are the annotators?
+
+[More Information Needed]
+
+### Personal and Sensitive Information
+
+[More Information Needed]
+
+## Considerations for Using the Data
+
+### Social Impact of Dataset
+
+[More Information Needed]
+
+### Discussion of Biases
+
+[More Information Needed]
+
+### Other Known Limitations
+
+[More Information Needed]
+
+## Additional Information
+
+### Dataset Curators
+
+[More Information Needed]
+
+### Licensing Information
+
+Copyright licensing information: https://dumps.wikimedia.org/legal.html
+
+All original textual content is licensed under the [GNU Free Documentation License](https://www.gnu.org/licenses/fdl-1.3.html) (GFDL)
+and the [Creative Commons Attribution-Share-Alike 3.0 License](https://creativecommons.org/licenses/by-sa/3.0/).
+Some text may be available only under the Creative Commons license; see their [Terms of Use](https://foundation.wikimedia.org/wiki/Policy:Terms_of_Use) for details.
+Text written by some authors may be released under additional licenses or into the public domain.
+
+### Citation Information
+
+```
+@ONLINE{wikidump,
+    author = "Wikimedia Foundation",
+    title  = "Wikimedia Downloads",
+    url    = "https://dumps.wikimedia.org"
+}
+```