safetensors gemma2 text-generation conversational en dataset:openbmb/UltraFeedback arxiv:2405.00675 base_model:UCLA-AGI/Gemma-2-9B-It-SPPO-Iter3 base_model:quantized:UCLA-AGI/Gemma-2-9B-It-SPPO-Iter3 license:gemma 4-bit awq region:us