Add Arxiv link, license and task category

This PR ensures the dataset can be found at https://huggingface.co/datasets?task_categories=task_categories:image-classification and is linked to the paper and code repository.

README.md

@@ -1,3 +1,9 @@
+---
+task_categories:
+- image-classification
+license: mit
+---
+
 ## Datasets
 1. We conduct experiments on three new 3D domain generalization ([3DDG](#new-3ddg-benchmarks)) benchmarks proposed by us, as introduced in the next section. 
     - base-to-new class generalization (base2new)
@@ -57,4 +63,8 @@
 
 2. The following table shows the statistics of this benchmark.
 
-    ![](assets/few-shot.png)
+    ![](assets/few-shot.png)
+
+Dataset presented in [Point-Cache: Test-time Dynamic and Hierarchical Cache for Robust and Generalizable Point Cloud Analysis](https://arxiv.org/abs/2503.12150). 
+
+Code: https://github.com/auniquesun/Point-Cache