model-index:
- name: tulu-2-dpo-70b
results: []
datasets:
- HuggingFaceH4/ultrafeedback_binarized
- allenai/tulu-v2-sft-mixture
language:
- en
base_model: meta-llama/Llama-2-70b-hf
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Model Card for Tulu V2 DPO 70B
Tulu is a series of language models that are trained to act as helpful assistants. Tulu V2 DPO 70B, and is a fine-tuned version of Llama 2 that was trained on on a mix of publicly available, synthetic and human datasets using Direct Preference Optimization (DPO). This model is a strong alternative to Llama 2 70b Chat.
Model description
- Model type: The flagship model of a suite of instruction and RLHF tuned chat models on a mix of publicly available, synthetic and human-created datasets.
- Language(s) (NLP): Primarily English
- License: AI2 ImpACT Low-risk license
- Finetuned from model: meta-llama/Llama-2-70b-hf
Model Sources
- Repository: https://github.com/allenai/https://github.com/allenai/open-instruct
- DPO Recipe: The DPO recipe is from the Zephyr Beta model
- Model Family: Other models and the dataset are found in the Tulu V2 collection.
Performance
At the time of release, the Tulu-v2-dpo-70b model is approximately equal to GPT4 on AlpacaEval, and has a score of 7.89 on MT-Bench. All smaller DPO'd models have strong performance per model size in the category and with lower verbosity (average completion length).
| Model | Size | Alignment | MT-Bench (score) | AlpacaEval (win rate %) |
|---|---|---|---|---|
| Tulu-v2-7b 🐪 | 7B | dDPO | 6.30 | 73.9 |
| Tulu-v2-dpo-7b 🐪 | 7B | dDPO | 6.27 | 85.1 |
| StableLM-Tuned-α | 7B | dSFT | 2.75 | - |
| MPT-Chat | 7B | dSFT | 5.42 | - |
| Xwin-LMv0.1 | 7B | dPPO | 6.19 | 87.83 |
| Mistral-Instructv0.1 | 7B | - | 6.84 | - |
| Zephyr-7b-α | 7B | dDPO | 6.88 | - |
| Zephyr-7b-β 🪁 | 7B | dDPO | 7.34 | 90.60 |
| Tulu-v2-13b 🐪 | 13B | dDPO | 6.70 | 78.9 |
| Tulu-v2-dpo-13b 🐪 | 13B | dDPO | 7.00 | 89.5 |
| Falcon-Instruct | 40B | dSFT | 5.17 | 45.71 |
| Guanaco | 65B | SFT | 6.41 | 71.80 |
| Llama2-Chat | 70B | RLHF | 6.86 | 92.66 |
| Vicuna v1.3 | 33B | dSFT | 7.12 | 88.99 |
| WizardLM v1.0 | 70B | dSFT | 7.71 | - |
| Xwin-LM v0.1 | 70B | dPPO | - | 95.57 |
| Tulu-v2-70b 🐪 | 70B | dDPO | 7.49 | 86.6 |
| Tulu-v2-dpo-70b 🐪 | 70B | dDPO | 7.89 | 95.1 |
| GPT-3.5-turbo | - | RLHF | 7.94 | 89.37 |
| Claude 2 | - | RLHF | 8.06 | 91.36 |
| GPT-4 | - | RLHF | 8.99 | 95.28 |
Intended uses & limitations
The model was initially fine-tuned on a filtered and preprocessed of the Tulu V2 mix dataset, which contains a diverse range of human created instructions and synthetic dialogues generated primarily by other LLMs. We then further aligned the model with a Jax DPO trainer built on EasyLM on the openbmb/UltraFeedback dataset, which contains 64k prompts and model completions that are ranked by GPT-4.
Bias, Risks, and Limitations
The Tulu models have not been aligned to generate safe completions within the RLHF phase or deployed with in-the-loop filtering of responses like ChatGPT, so the model can produce problematic outputs (especially when prompted to do so). It is also unknown what the size and composition of the corpus was used to train the base Llama 2 models, however it is likely to have included a mix of Web data and technical sources like books and code. See the Falcon 180B model card for an example of this.
Training hyperparameters
The following hyperparameters were used during DPO training:
- learning_rate: 5e-07
- total_train_batch_size: 32
- optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
- lr_scheduler_type: linear
- lr_scheduler_warmup_ratio: 0.1
- num_epochs: 3.0
Citation
If you find Tulu 2 is useful in your work, please cite it with:
@misc{ivison2023changing,
title={Camels in a Changing Climate: Enhancing LM Adaptation with Tulu 2},
author={Hamish Ivison and Yizhong Wang and Valentina Pyatkin and Nathan Lambert and Matthew Peters and Pradeep Dasigi and Joel Jang and David Wadden and Noah A. Smith and Iz Beltagy and Hannaneh Hajishirzi},
year={2023},
archivePrefix={arXiv},
primaryClass={cs.CL}
}
Model card adapted from Zephyr Beta