chunk_content: ht"]),
          ToTensor(),
          normalize,
      ]
  )
  
  
  def preprocess_train(example_batch):
      """Apply train_transforms across a batch."""
      example_batch["pixel_values"] = [train_transforms(image.convert("RGB")) for image in example_batch["image"]]
      return example_batch
  
  
  def preprocess_val(example_batch):
      """Apply val_transforms across a batch."""
      example_batch["pixel_values"] = [val_transforms(image.convert("RGB")) for image 