transformers safetensors gemma text-generation alignment-handbook trl dpo generated_from_trainer conversational dataset:argilla/dpo-mix-7k arxiv:2310.16944 base_model:HuggingFaceH4/zephyr-7b-gemma-sft-v0.1 base_model:finetune:HuggingFaceH4/zephyr-7b-gemma-sft-v0.1 license:other model-index autotrain_compatible text-generation-inference endpoints_compatible region:us