Add dataset card metadata and links

This PR adds metadata to the dataset card, including the task category and links to the paper and project page.

README.md

@@ -1 +1,18 @@
-The image_data column directly stores the binary codes of images in JPG format. During training, please use the mapping between file names and clients recorded in the JSON files under the map folder for experiments.
+---
+task_categories:
+- image-classification
+license: unknown
+language:
+- en
+tags:
+- remote-sensing
+- federated-learning
+---
+
+The image_data column directly stores the binary codes of images in JPG format. During training, please use the mapping between file names and clients recorded in the JSON files under the map folder for experiments.
+
+This dataset is used in the paper [FedRS-Bench: Realistic Federated Learning Datasets and Benchmarks in Remote Sensing](https://huggingface.co/papers/2505.08325).
+
+Project page: https://fedrs-bench.github.io/
+
+The dataset consists of 135 clients. All the images are collected from 8 different datasets.