docs(datasets) Add dataset contribution guide

datasets/doc/source/contributor-how-to-contribute-dataset.rst

@@ -0,0 +1,56 @@
+How to contribute a dataset
+===========================
+
+To make a dataset available in Flower Dataset (`flwr-datasets`), you need to add the dataset to `HuggingFace Hub <https://huggingface.co/datasets>`_ .
+
+This guide will explain the best practices we found when adding datasets ourselves and point to the HFs guides. To see the datasets added by Flower, visit https://huggingface.co/flwrlabs.
+
+Dataset contribution process
+----------------------------
+The contribution contains three steps: first, on your development machine transform your dataset into a ``datasets.Dataset`` object, the preferred format for datasets in HF Hub; second, upload the dataset to HuggingFace Hub and detail it its readme how can be used with Flower Dataset; third, share your dataset with us and we will add it to the `recommended FL dataset list <https://flower.ai/docs/datasets/recommended-fl-datasets.html>`_ 
+
+Creating a dataset locally
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+You can create a local dataset directly using the `datasets` library or load it in any custom way and transform it to the `datasets.Dataset` from other Python objects.
+To complete this step, we recommend reading our :doc:`how-to-use-with-local-data` guide or/and the `Create a dataset <https://huggingface.co/docs/datasets/create_dataset>`_ guide from HF.
+
+.. tip::
+    We recommend that you do not upload custom scripts to HuggingFace Hub; instead, create the dataset locally and upload the data, which will speed up the processing time each time the data set is downloaded.
+
+Contribution to the HuggingFace Hub
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Each dataset in the HF Hub is a Git repository with a specific structure and readme file, and HuggingFace provides an API to push the dataset and, alternatively, a user interface directly in the website to populate the information in the readme file.
+
+Contributions to the HuggingFace Hub come down to:
+
+1. creating an HF repository for the dataset.
+2. uploading the dataset.
+3. filling in the information in the readme file.
+
+To complete this step, follow this HF's guide `Share dataset to the Hub <https://huggingface.co/docs/datasets/upload_dataset>`_.
+
+Note that the push of the dataset is straightforward, and here's what it could look like:
+
+.. code-block:: python
+
+    from datasets import Dataset
+
+    # Example dataset
+    data = {
+        'column1': [1, 2, 3],
+        'column2': ['a', 'b', 'c']
+    }
+
+    # Create a Dataset object
+    dataset = Dataset.from_dict(data)
+
+    # Push the dataset to the HuggingFace Hub
+    dataset.push_to_hub("you-hf-username/your-ds-name")
+
+To make the dataset easily accessible in FL we recommend adding the "Use in FL" section. Here's an example of how it is done in `one of our repos  <https://huggingface.co/datasets/flwrlabs/cinic10#use-in-fl>`_ for the cinic10 dataset.
+
+Increasing visibility of the dataset
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+If you want the dataset listed in our `recommended FL dataset list <https://flower.ai/docs/datasets/recommended-fl-datasets.html>`_  , please send a PR or ping us in `Slack <https://flower.ai/join-slack/>`_ #contributions channel.
+
+That's it! You have successfully contributed a dataset to the HuggingFace Hub and made it available for FL community. Thank you for your contribution!

datasets/doc/source/index.rst

@@ -66,6 +66,13 @@ Information-oriented API reference and other reference material.
    recommended-fl-datasets
    ref-telemetry
 
+.. toctree::
+   :maxdepth: 1
+   :caption: Contributor tutorials
+
+   contributor-how-to-contribute-dataset
+
+
 Main features
 -------------
 Flower Datasets library supports: