Update README.md

README.md

@@ -48,10 +48,18 @@ For example, for the web document `<image_1>text<image_2>`, in `images`, we have
 
 The images are replaced by their URLs, and the users have to download them themselves, for example with the library `img2dataset`.
 
-In `metadata`, there is a string that can be transformed into a list with `json.loads(example["metadata"])`. This list will have the same size as the lists of images and texts, and will have a dictionary for each index where there is an image, and a `None` value when there is a text. This dictionary will contain the metadata of the images (original source document, unformatted source, alt-text if present, ...).
+In `metadata`, there is a string that can be transformed into a list with `json.loads(example["metadata"])`. This list will have the same size as the lists of images and texts, and will have a dictionary for each index where there is an image, and a `None` value when there is a text. This dictionary will contain the metadata of the image (original source document, unformatted source, alt-text if present, ...).
 
 Finally, in `general_metadata`, there is a string that can be transformed into a dictionary, containing the URL of the document, and information about its location in the Common Crawl data.
 
+## Data Splits
+
+There is only one split, `train`, that contains 141 million examples.
+
+## Size
+
+`OBELISC` with images replaced by their URLs, in arrow format, weights 666.6 GB (unwanted!)
+
 ### Visualization of OBELISC documents
 
 https://huggingface.co/spaces/HuggingFaceM4/obelisc_visualization