transformers safetensors mistral text-generation alignment-handbook trl dpo generated_from_trainer conversational dataset:HuggingFaceH4/ultrafeedback_binarized base_model:HuggingFaceH4/mistral-7b-sft-beta base_model:finetune:HuggingFaceH4/mistral-7b-sft-beta license:mit autotrain_compatible text-generation-inference endpoints_compatible region:us