vision image-classification dataset:HuggingFaceM4/COCO dataset:ehristoforu/dalle-3-images dataset:poloclub/diffusiondb dataset:ehristoforu/midjourney-images dataset:nateraw/midjourney-texttoimage dataset:duchaiten/duchaiten-realistic-sdxl arxiv:1512.03385 license:apache-2.0 region:us