gguf alignment-handbook generated_from_trainer dataset:argilla/dpo-mix-7k arxiv:2406.08414 base_model:HuggingFaceH4/zephyr-7b-gemma-sft-v0.1 base_model:quantized:HuggingFaceH4/zephyr-7b-gemma-sft-v0.1 license:gemma region:us