safetensors llama-factory lora generated_from_trainer llama2 llama instruct finetune gpt4 synthetic data stable diffusion alpaca llm dataset:Nekochu/discord-unstable-diffusion-SD-prompts dataset:Nekochu/Luminia-mixture dataset:AstraMindAI/RLAIF-Nectar dataset:hiyouga/DPO-En-Zh-20k license:apache-2.0 region:us