ALMA-7B-R

**ALMA-R** builds upon ALMA models, with further LoRA fine-tuning with our proposed **Contrastive Preference Optimization (CPO)** as opposed to the Supervised Fine-tuning used in ALMA. CPO fine-tuning requires our triplet preference data for preference learning. ALMA-R now can matches or even exceeds GPT-4 or WMT winners! We release six translation models presented in the paper: - ALMA-7B - ALMA-7B-LoRA - **ALMA-7B-R (NEW!)**: Further LoRA fine-tuning upon ALMA-7B-LoRA with contrastive preference optimization. - ALMA-13B - ALMA-13B-LoRA - **ALMA-13B-R (NEW!)**: Further LoRA fine-tuning upon ALMA-13B-LoRA with contrastive preference optimization (BEST MODEL!). Model checkpoints are released at huggingface: | Models | Base Model Link | LoRA Link | |:-------------:|:---------------:|:---------:| | ALMA-7B | haoranxu/ALMA-7B | - | | ALMA-7B-LoRA | haoranxu/ALMA-7B-Pretrain | haoranxu/ALMA-7B-Pretrain-LoRA | | **ALMA-7B-R (NEW!)** | haoranxu/ALMA-7B-R (LoRA merged) | - | | ALMA-13B | haoranxu/ALMA-13B | - | | ALMA-13B-LoRA | haoranxu/ALMA-13B-Pretrain | haoranxu/ALMA-13B-Pretrain-LoRA | | **ALMA-13B-R (NEW!)** | haoranxu/ALMA-13B-R (LoRA merged) | - |

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