transformers ovis text-generation MLLM image-text-to-text conversational custom_code en dataset:AIDC-AI/Ovis-dataset arxiv:2405.20797 base_model:AIDC-AI/Ovis1.6-Llama3.2-3B base_model:quantized:AIDC-AI/Ovis1.6-Llama3.2-3B license:apache-2.0 autotrain_compatible 4-bit gptq region:us