Update README.md

README.md

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-license: apache-2.0
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+---
+license: apache-2.0
+---
+
+This is a 10K test dataset for Mask Perception, a mask-to-text task which aims for fine-grained understanding.
+It is built based on RefCOCO/+/g. 
+You can use it in [\[📂 GitHub\]](https://github.com/yayafengzi/LMM-HiMTok).
+
+If you find this project useful in your research, please consider citing:
+
+```BibTeX
+@article{wang2025himtok,
+  title={HiMTok: Learning Hierarchical Mask Tokens for Image Segmentation with Large Multimodal Model},
+  author={Wang, Tao and Cheng, Changxu and Wang, Lingfeng and Chen, Senda and Zhao, Wuyue},
+  journal={arXiv preprint arXiv:2503.13026},
+  year={2025}
+}
+```