README.md

---
library_name: transformers
license: apache-2.0
datasets:
- argilla/dpo-mix-7k
---

# Phi-2-ORPO

**Phi-2-ORPO** is a fine-tuned version of **[microsoft/phi-2](https://huggingface.co/microsoft/phi-2)** on **[argilla/dpo-mix-7k](https://huggingface.co/datasets/argilla/dpo-mix-7k)**
preference dataset using **Odds Ratio Preference Optimization (ORPO)**. The model has been trained for 1 epoch.

## LazyORPO

This model has been trained using **[LazyORPO](https://colab.research.google.com/drive/19ci5XIcJDxDVPY2xC1ftZ5z1kc2ah_rx?usp=sharing)**. A colab notebook that makes the training 
process much easier. Based on [ORPO paper](https://colab.research.google.com/corgiredirector?site=https%3A%2F%2Fhuggingface.co%2Fpapers%2F2403.07691). This notebook has been created by
**[Zain Ul Abideen](https://huggingface.co/abideen)**

#### What is ORPO?

Odds Ratio Preference Optimization (ORPO) proposes a new method to train LLMs by combining SFT and Alignment into a new objective (loss function), achieving state of the art results.
Some highlights of this techniques are:

* 🧠 Reference model-free → memory friendly
* 🔄 Replaces SFT+DPO/PPO with 1 single method (ORPO)
* 🏆 ORPO Outperforms SFT, SFT+DPO on PHI-2, Llama 2, and Mistral
* 📊 Mistral ORPO achieves 12.20% on AlpacaEval2.0, 66.19% on IFEval, and 7.32 on MT-Bench out Hugging Face Zephyr Beta


#### Usage

```python
import torch
from transformers import AutoModelForCausalLM, AutoTokenizer

torch.set_default_device("cuda")

model = AutoModelForCausalLM.from_pretrained("abideen/phi2-pro", torch_dtype="auto", trust_remote_code=True)
tokenizer = AutoTokenizer.from_pretrained("abideen/phi2-pro", trust_remote_code=True)

inputs = tokenizer('''
   """
   Write a detailed analogy between mathematics and a lighthouse.
   """''', return_tensors="pt", return_attention_mask=False)

outputs = model.generate(**inputs, max_length=200)
text = tokenizer.batch_decode(outputs)[0]
print(text)
```


## Evaluation

### COMING SOON