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How to install datasets

Acknowledgement: We extend our gratitude to the authors of CoOp/CoCoOp for their foundational work on data preparation instructions. In this project, we have adopted their data preparation format, implementing certain modifications to better suit our needs.

We suggest putting all datasets under the same folder (say $DATA) to ease management and following the instructions below to organize datasets to avoid modifying the source code. The file structure looks like

$DATA/
|–– imagenet/
|–– caltech-101/
|–– oxford_pets/
|–– stanford_cars/

If you have some datasets already installed somewhere else, you can create symbolic links in $DATA/dataset_name that point to the original data to avoid duplicate download.

Datasets list:

The instructions to prepare each dataset are detailed below. To ensure reproducibility and fair comparison for future work, we provide fixed train/val/test splits for all datasets except ImageNet where the validation set is used as test set. The fixed splits are either from the original datasets (if available) or created by us.

ImageNet

  • Create a folder named imagenet/ under $DATA.
  • Create images/ under imagenet/.
  • Download the dataset from the official website and extract the validation set to $DATA/imagenet/images. The directory structure should look like
imagenet/
|–– images/
|   |–– val/ # contains 1,000 folders like n01440764, n01443537, etc.
  • If you had downloaded the ImageNet dataset before, you can create symbolic links to map the validation set to $DATA/imagenet/images.
  • Download the classnames.txt to $DATA/imagenet/ from this link. The class names are copied from CLIP.

Caltech101

The directory structure should look like

caltech-101/
|–– 101_ObjectCategories/
|–– split_zhou_Caltech101.json

OxfordPets

The directory structure should look like

oxford_pets/
|–– images/
|–– annotations/
|–– split_zhou_OxfordPets.json

StanfordCars

The directory structure should look like

stanford_cars/
|–– cars_test\
|–– cars_test_annos_withlabels.mat
|–– devkit\
|–– split_zhou_StanfordCars.json

Flowers102

The directory structure should look like

oxford_flowers/
|–– cat_to_name.json
|–– imagelabels.mat
|–– jpg/
|–– split_zhou_OxfordFlowers.json

Food101

The directory structure should look like

food-101/
|–– images/
|–– license_agreement.txt
|–– meta/
|–– README.txt
|–– split_zhou_Food101.json

FGVCAircraft

The directory structure should look like

fgvc_aircraft/
|–– images/
|–– ... # a bunch of .txt files

SUN397

The directory structure should look like

sun397/
|–– SUN397/
|–– split_zhou_SUN397.json
|–– ... # a bunch of .txt files

DTD

The directory structure should look like

dtd/
|–– images/
|–– imdb/
|–– labels/
|–– split_zhou_DescribableTextures.json

EuroSAT

The directory structure should look like

eurosat/
|–– 2750/
|–– split_zhou_EuroSAT.json

UCF101

  • Create a folder named ucf101/ under $DATA.
  • Download the zip file UCF-101-midframes.zip from here and extract it to $DATA/ucf101/. This zip file contains the extracted middle video frames.
  • Download split_zhou_UCF101.json from this link.

The directory structure should look like

ucf101/
|–– UCF-101-midframes/
|–– split_zhou_UCF101.json

ImageNetV2

The directory structure should look like

imagenetv2/
|–– imagenetv2-matched-frequency-format-val/
|–– classnames.txt

ImageNet-Sketch

The directory structure should look like

imagenet-sketch/
|–– images/ # contains 1,000 folders whose names have the format of n*
|–– classnames.txt

ImageNet-A

  • Create a folder named imagenet-adversarial/ under $DATA.
  • Download the dataset from https://github.com/hendrycks/natural-adv-examples and extract it to $DATA/imagenet-adversarial/.
  • Copy $DATA/imagenet/classnames.txt to $DATA/imagenet-adversarial/.

The directory structure should look like

imagenet-adversarial/
|–– imagenet-a/ # contains 200 folders whose names have the format of n*
|–– classnames.txt

ImageNet-R

  • Create a folder named imagenet-rendition/ under $DATA.
  • Download the dataset from https://github.com/hendrycks/imagenet-r and extract it to $DATA/imagenet-rendition/.
  • Copy $DATA/imagenet/classnames.txt to $DATA/imagenet-rendition/.

The directory structure should look like

imagenet-rendition/
|–– imagenet-r/ # contains 200 folders whose names have the format of n*
|–– classnames.txt