transformers safetensors mistral text-generation finetuned quantized 4-bit gptq reward model RLHF RLAIF conversational en dataset:berkeley-nest/Nectar arxiv:1909.08593 license:apache-2.0 autotrain_compatible endpoints_compatible has_space text-generation-inference region:us base_model:Nexusflow/Starling-LM-7B-beta base_model:quantized:Nexusflow/Starling-LM-7B-beta