Update README.md

README.md

@@ -13,8 +13,8 @@ This repository contains the *WorldFloodsv2* dataset released with the publicati
 > E. Portalés-Julià, G. Mateo-García, C. Purcell, and L. Gómez-Chova [Global flood extent segmentation in optical satellite images](https://www.nature.com/articles/s41598-023-47595-7). _Scientific Reports 13, 20316_ (2023). DOI: 10.1038/s41598-023-47595-7.
 
 
-The [*WorldFloods* database](https://www.nature.com/articles/s41598-023-47595-7) contains 509 pairs of Sentinel-2 images and flood segmentation masks. 
-It requires approximately 300GB of hard-disk storage. 
+The [*WorldFloods* database](https://www.nature.com/articles/s41598-023-47595-7) contains 509 pairs of Sentinel-2 images and flood segmentation masks. Splitted in train, val and test sets.
+It requires approximately 310GB of hard-disk storage. 
 
 
 <img src="worldfloods_v2.png" alt="licence" width="60%"/>
@@ -22,6 +22,7 @@ It requires approximately 300GB of hard-disk storage.
 
 The *WorldFloods* database and all pre-trained models are released under a [Creative Commons non-commercial licence](https://creativecommons.org/licenses/by-nc/4.0/legalcode.txt)
 
+If you find this work useful, please cite:
 
 ```
 @article{portales-julia_global_2023,