Push model using huggingface_hub.
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- config.json +9 -0
- model.safetensors +3 -0
README.md
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- TomNickson/OpenX-Embodiment
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- jxu124/OpenX-Embodiment
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language:
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- en
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license: mit
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pipeline_tag: robotics
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---
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[
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[
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[](https://arxiv.org/abs/2511.14659)
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[](https://github.com/declare-lab/nora-1.5)
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π₯ Project NORA is supported by Gemini and Lambda Labs! We are thankful to them.
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NORA-1.5 is a **Vision-Language-Action (VLA)** model that improves generalization and real-world decision making through **post-training with world-model-based and action-based preference rewards**.
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The model builds upon the NORA foundation to achieve stronger **instruction following**, **closed-loop control**, and **real-robot success**, demonstrating reliability across **LIBERO** and **SimplerEnv** environments.
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<p align="center">
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<img src="https://declare-lab.github.io/assets/images/nora-1.5-arxiv-teaser.png" width="100%">
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</p>
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---
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## π Project Website
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π **https://declare-lab.github.io/nora-1.5**
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---
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## π Key Features
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- **Vision-Language-Action architecture** with enhanced **task completion rate** and **distraction rate**
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- **Action-based preference optimization** using expert preference rewards
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- **World-model-based preference learning** for improved planning and consistency
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- Strong **closed-loop control**, enabling deployment in real robot settings
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- Supports **multi-task**, **long-horizon**, and **few-shot generalization**
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- Compatible with **LeRobot**, **LIBERO**, **SimplerEnv**, and custom environments
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---
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## π TODO <a name="todos"></a> ~ 1 week
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- [ ] Release the inference code of Nora-1.5
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- [ ] Release all relevant model checkpoints(Pretrained, libero, SimplerEnv etc)
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- [ ] Release the training/fine-tuning code of Nora-1.5 with LeRobot Dataset
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- [ ] Release SimplerEnv evaluation code
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## Minimal Inference Sample (Will update)
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```python
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from inference.modelling_expert import VLAWithExpert
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model = VLAWithExpert()
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model.to('cuda')
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outputs = model.sample_actions(PIL IMAGE,instruction,num_steps=10) ## Outputs 7 Dof action of normalized and unnormalized action
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```
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## Citation
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```bibtex
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@article{hung2025nora15,
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title={NORA-1.5: A Vision-Language-Action Model Trained using World Model- and Action-Based Preference Rewards},
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author={Hung, Chia-Yu and Majumder, Navonil and Deng, Haoyuan, Liu Renhang, Yankang Ang, Amir Zadeh, Chuan Li, Dorien Herremans, Ziwei Wang, and Soujanya Poria},
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journal={arXiv preprint},\
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year={2025}
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}
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```
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tags:
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- model_hub_mixin
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- pytorch_model_hub_mixin
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This model has been pushed to the Hub using the [PytorchModelHubMixin](https://huggingface.co/docs/huggingface_hub/package_reference/mixins#huggingface_hub.PyTorchModelHubMixin) integration:
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- Code: [More Information Needed]
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- Paper: [More Information Needed]
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- Docs: [More Information Needed]
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config.json
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{
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"action_chunk_length": 5,
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"action_dim": 7,
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"fast_tokenizer_id": "physical-intelligence/fast",
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"lm_expert_num_attention_head": 6,
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"lm_expert_width_multiplier": 0.375,
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"processor_id": "declare-lab/nora",
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"vlm_model_id": "declare-lab/nora-long"
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}
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model.safetensors
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version https://git-lfs.github.com/spec/v1
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oid sha256:8c2aa44abe813e131d19d40591e97b78f084d1f716db253d203190cce68ae5ef
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size 7973435350
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