Improve model card metadata and links

Hi! I'm Niels from the community science team at Hugging Face.

This PR improves the model card metadata by adding the `arxiv` ID, which links the model to its corresponding paper, and the training dataset ID. I've also added `library_name: transformers` as the model architecture is compatible with the library according to the `config.json`.

Additionally, I've added some relevant tags like `ecg` and `reasoning` to improve discoverability.

README.md

@@ -1,12 +1,18 @@
 ---
-license: apache-2.0
-language:
-- en
 base_model:
 - Qwen/Qwen3-VL-8B-Instruct
+language:
+- en
+license: apache-2.0
 pipeline_tag: image-text-to-text
+library_name: transformers
+arxiv: 2602.04279
+datasets:
+- PKUDigitalHealth/ECG-Protocol-Guided-Grounding-CoT
 tags:
 - medical
+- ecg
+- reasoning
 ---
 
 <div align="center">
@@ -32,19 +38,15 @@ tags:
 
 ## Introduction
 
-Electrocardiography (ECG) serves as an indispensable diagnostic tool in clinical practice, yet existing multimodal large language models (MLLMs) remain unreliable for ECG interpretation, often producing plausible but clinically incorrect analyses. To address this, we propose ECG-R1, the first reasoning MLLM designed for reliable ECG interpretation via three innovations. First, we construct the interpretation corpus using Protocol-Guided Instruction Data Generation, grounding interpretation in measurable ECG features and monograph-defined quantitative thresholds and diagnostic logic. Second, we present a modality-decoupled architecture with Interleaved Modality Dropout to improve robustness and cross-modal consistency when either the ECG signal or ECG image is missing. Third, we present Reinforcement Learning with ECG Diagnostic Evidence Rewards to strengthen evidence-grounded ECG interpretation. Additionally, we systematically evaluate the ECG interpretation capabilities of proprietary, open-source, and medical MLLMs, and provide the first quantitative evidence that severe hallucinations are widespread, suggesting that the public should not directly trust these outputs without independent verification.  Code and data are publicly available at [Github](https://github.com/PKUDigitalHealth/ECG-R1) and [HuggingFace](https://huggingface.co/datasets/PKUDigitalHealth/ECG-Protocol-Guided-Grounding-CoT), and an online platform can be accessed at [ECG-R1-Online-Platform](http://ai.heartvoice.com.cn/ECG-R1/).
+Electrocardiography (ECG) serves as an indispensable diagnostic tool in clinical practice, yet existing multimodal large language models (MLLMs) remain unreliable for ECG interpretation, often producing plausible but clinically incorrect analyses. To address this, we propose ECG-R1, the first reasoning MLLM designed for reliable ECG interpretation via three innovations. First, we construct the interpretation corpus using Protocol-Guided Instruction Data Generation, grounding interpretation in measurable ECG features and monograph-defined quantitative thresholds and diagnostic logic. Second, we present a modality-decoupled architecture with Interleaved Modality Dropout to improve robustness and cross-modal consistency when either the ECG signal or ECG image is missing. Third, we present Reinforcement Learning with ECG Diagnostic Evidence Rewards to strengthen evidence-grounded ECG interpretation. Additionally, we systematically evaluate the ECG interpretation capabilities of proprietary, open-source, and medical MLLMs, and provide the first quantitative evidence that severe hallucinations are widespread, suggesting that the public should not directly trust these outputs without independent verification. 
 
 ## Resource
 
-
-#### Paper: 📄 [Arxiv](https://arxiv.org/pdf/2602.04279)
-
-### Github: ⌨ [Github](https://github.com/PKUDigitalHealth/ECG-R1)
-
-#### Model: 🤗 [ECG-R1-8B](https://huggingface.co/PKUDigitalHealth/ECG-R1-8B-RL)
-
-#### Data: 🤗 [ECG-Protocol-Guided-Grounding-CoT](https://huggingface.co/datasets/PKUDigitalHealth/ECG-Protocol-Guided-Grounding-CoT)
-
+- **Paper:** [ECG-R1: Protocol-Guided and Modality-Agnostic MLLM for Reliable ECG Interpretation](https://arxiv.org/abs/2602.04279)
+- **GitHub Repository:** [PKUDigitalHealth/ECG-R1](https://github.com/PKUDigitalHealth/ECG-R1)
+- **Online Platform:** [ECG-R1-Online-Platform](http://ai.heartvoice.com.cn/ECG-R1/)
+- **Model:** 🤗 [ECG-R1-8B](https://huggingface.co/PKUDigitalHealth/ECG-R1-8B-RL)
+- **Data:** 🤗 [ECG-Protocol-Guided-Grounding-CoT](https://huggingface.co/datasets/PKUDigitalHealth/ECG-Protocol-Guided-Grounding-CoT)
 
 ## Citation
 
@@ -63,4 +65,4 @@ If you find ECG-R1 helpful for your research and applications, please cite our p
 ```
 
 ## Acknowledgement
-We thank the authors of [PULSE](https://github.com/AIMedLab/PULSE/tree/dev), [ECG-Chat](https://github.com/YubaoZhao/ECG-Chat), [GEM](https://github.com/lanxiang1017/GEM), and [Swift](https://github.com/modelscope/ms-swift) for their publicly released models, datasets, and training codes.
+We thank the authors of [PULSE](https://github.com/AIMedLab/PULSE/tree/dev), [ECG-Chat](https://github.com/YubaoZhao/ECG-Chat), [GEM](https://github.com/lanxiang1017/GEM), and [Swift](https://github.com/modelscope/ms-swift) for their publicly released models, datasets, and training codes.