transformers safetensors paligemma pretraining llama-factory mllm vlm image-text-to-text en zh dataset:BUAADreamer/llava-en-zh-2k base_model:google/paligemma-3b-mix-448 base_model:finetune:google/paligemma-3b-mix-448 license:gemma text-generation-inference region:us