CLIP Benchmark

The goal of this repo is to evaluate CLIP-like models on a standard set of datasets on different tasks such as zero-shot classification and zero-shot retrieval.

Below we show the average rank (1 is the best, lower is better) of different CLIP models, evaluated on different datasets.

The current detailed results of the benchmark can be seen here or directly in the notebook.

Features

• Support for zero-shot classification and zero-shot retrieval
• Support for OpenCLIP pre-trained models
• Support various datasets from torchvision, tensorflow datasets, and VTAB.
• Support Japanese CLIP by rinna

How to install?

pip install clip-benchmark

How to use?

To evaluate we recommend to create a models.txt like

ViT-B-32,openai

to get the list of datasets

wget https://raw.githubusercontent.com/LAION-AI/CLIP_benchmark/main/benchmark/webdatasets.txt

Then to run

clip_benchmark eval --pretrained_model models.txt \
    --dataset "webdatasets.txt" \
    --dataset_root "https://huggingface.co/datasets/clip-benchmark/wds_{dataset_cleaned}/tree/main" \
    --output "benchmark_{dataset}_{pretrained}_{model}_{language}_{task}.json"

Then to get the full table

clip_benchmark build benchmark_*.json --output benchmark.csv

Command line interface (CLI)

The easiest way to benchmark the models is using the CLI, clip_benchmark. You can specify the model to use, the dataset and the task to evaluate on. Once it is done, evaluation is performed and the results are written into a JSON file.

Using other models than openclip

It is possible to use other models than openclip ones. For example japanese-clip is supported

Here is an example of use

>>> python3 clip_benchmark/cli.py eval \
  --model_type "ja_clip" \ # flag to use japanese-clip
  --pretrained "rinna/japanese-cloob-vit-b-16" \ # now, we have `rinna/japanese-cloob-vit-b-16` or `rinna/japanese-clip-vit-b-16`. 
  --language "jp" \
  --task "zeroshot_classification"  \
  --dataset "imagenet1k"  \
  --dataset_root {ROOT_PATH} 

>>> cat result.json
{"dataset": "imagenet1k", "model": "ViT-B-32-quickgelu", "pretrained": "rinna/japanese-cloob-vit-b-16", "task": "zeroshot_classification", "metrics": {"acc1": 0.54636, "acc5": 0.72856, "mean_per_class_recall": 0.54522}, "language": "jp"}

How to add other CLIP models

Please follow these steps:

1. Add a identity file to load model in clip_benchmark/models
2. Define a loading function, that returns a tuple (model, transform, tokenizer). Please see clip_benchmark/models/open_clip.py as an example.
3. Add the function into TYPE2FUNC in clip_benchmark/models/__init__.py

Remarks:

• The new tokenizer/model must enable to do the following things as https://github.com/openai/CLIP#usage
  • tokenizer(texts).to(device) ... texts is a list of string
  • model.encode_text(tokenized_texts) ... tokenized_texts is a output from tokenizer(texts).to(device)
  • model.encode_image(images) ... images is a image tensor by the transform

CIFAR-10 example

Here is an example for CIFAR-10 zero-shot classification using OpenCLIP's pre-trained model on LAION-400m:

clip_benchmark eval --dataset=cifar10 --task=zeroshot_classification --pretrained=laion400m_e32 --model=ViT-B-32-quickgelu --output=result.json --batch_size=64

By default, the dataset is downloaded into --dataset_root, which by default is root.

Here is the content of result.json after the evaluation is done:

{
    "dataset": "cifar10", "model": "ViT-B-32-quickgelu", 
    "pretrained": "laion400m_e32", "task": "zeroshot_classification",
    "metrics": {"acc1": 0.9074, "acc5": 0.998}
}

VOC2007 example

Here is another example with VOC2007, which is a multi-label classification dataset.

clip_benchmark eval --dataset=voc2007_multilabel --task=zeroshot_classification --pretrained=laion400m_e32 --model=ViT-B-32-quickgelu --output=result.json --batch_size=64

Here is the content of result.json after the evaluation is done:

{"dataset": "voc2007_multilabel", "model": "ViT-B-32-quickgelu", "pretrained": "laion400m_e32", "task": "zeroshot_classification", "metrics": {"mean_average_precision": 0.7627869844436646}}

Here, we compute the mean average precision or mAP, more details about that metric here in the context of multi-label classification.

VTAB example

Here is an example on how to run it on VTAB classification tasks. First, you need to install VTAB's dedicated package.

pip install task_adaptation==0.1

Then, you can run it by providing the full dataset name. Example with eurosat:

clip_benchmark eval --dataset=vtab/eurosat --task=zeroshot_classification --pretrained=laion400m_e32 --model=ViT-B-32-quickgelu --output=result.json --batch_size=64

See clip_benchmark/datasets/builder.py#L634 for the full list of VTAB dataset collection.

TensorFlow dataset example

Here is an example on how to run it on Tensorflow datasets. First, you need to install tfds-nightly and timm.

pip install timm tfds-nightly

The name of the dataset follows the template tfds/<DATASET_NAME>.

Example with cifar10:

clip_benchmark eval --dataset=tfds/cifar10 --task=zeroshot_classification --pretrained=laion400m_e32 --model=ViT-B-32-quickgelu --output=result.json --batch_size=64

COCO captions example

Here is an example for COCO captions zero-shot retrieval:

clip_benchmark eval --dataset=mscoco_captions --task=zeroshot_retrieval --pretrained=laion400m_e32 --model=ViT-B-32-quickgelu --output=result.json --batch_size=64

Note that for using COCO, you also need to install pycocotools (e.g., using pip install pycocotools).

Webdataset example

Here is an example on how to run it on webdatasets. First, you need to install webdataset.

pip install webdataset

Creating a webdataset

You can either convert an already supported CLIP_benchmark dataset to webdataset format, or manually create your own with the same file structure. For already supported datasets use the CLI command clip_benchmark_export_wds as in this example:

$ clip_benchmark_export_wds --dataset cifar10 --split train --dataset_root DATA_DIR/ --output wds_cifar10/
$ clip_benchmark_export_wds --dataset cifar10 --split test --dataset_root DATA_DIR/ --output wds_cifar10/

which will convert the train and test splits for CIFAR-10 (downloaded to DATA_DIR/) and save the webdataset to wds_cifar10/ (upload to Huggingface Hub must be done manually for now). Retrieval datasets are also supported with the --retrieval flag.

For other datasets, data must be stored with the following file structure:

root_dir/
    train/
        nshards.txt
        0.tar
        1.tar
        ...
    test/
        nshards.txt
        0.tar
        ...
    classnames.txt
    zeroshot_classification_templates.txt
    dataset_type.txt

Each split should be contained in its own folder and nshards.txt should contain a single integer corresponding to the number of TAR files. The TAR files should follow webdataset format, with an image file (.webp, .png, or .jpg) and a label (.cls) for each example. Classnames and templates are required for zeroshot classification evaluation, with each classname or template on its own line. Dataset type is required for distinguishing zeroshot retrieval evaluation: the file should just contain the text retrieval.

Evaluating on a webdataset

The name of the dataset follows the template wds/<DATASET_NAME>. Note that the dataset name currently only affects the name in the results output - classnames and templates are loaded directly from the included files. The dataset root directory can be either a local path to the root_dir as specified above, or an HTTP URL pointing to a Huggingface Hub dataset file tree.

Example with vtab/cifar10:

$ clip_benchmark eval --dataset wds/vtab/cifar10 --dataset_root ROOT_DIR/wds_vtab-cifar10/
$ clip_benchmark eval --dataset wds/vtab/cifar10 --dataset_root https://huggingface.co/datasets/clip-benchmark/wds_vtab-cifar10/tree/main

All other arguments remain the same as in the other examples. See https://huggingface.co/clip-benchmark for a full list of datasets that have already been uploaded to Huggingface.

Evaluate mulitple models on multiple datasets

For the purpose of benchmarking, it is possible to run the CLI with multiple pre-trained models on multiple datasets.

Pretrained models and datasets list as arguments

For models, we can provide list of pretrained model names in the form of 'model,pretrained' (so model and pretrained are comma separated). For datasets, we can provide a list of datasets. For languages, we can provide a list of languages. Example:

clip_benchmark eval --pretrained_model  ViT-B-32-quickgelu,laion400m_e32 ViT-L-14,laion400m_e32  \
--dataset cifar10 cifar100 --dataset_root "clip_benchmark_datasets/{dataset}" --language en jp \
 --output "{dataset}_{pretrained}_{model}_{language}_{task}.json"

Note that --dataset_root and --output can be now in the form of a template that depends on the dataset/model/language/task (for --output) and dataset name (for --dataset_root).

Note that If the benchmark fails at some point, it is possible to resume it by skipping already evaluated models using --skip_existing.

Pretrained models and datasets list as files

We can also provide a path to files with models (each line is in the form of 'model,pretrained' where model and pretrained are comma separated) and datasets list (one dataset per line):

clip_benchmark eval --pretrained_model  benchmark/models.txt \
--dataset benchmark/datasets.txt --dataset_root "clip_benchmark_datasets/{dataset}"  \
 --output "{dataset}_{pretrained}_{model}_{language}_{task}.json"

Examples are available in benchmark/datasets.txt and benchmark/models.txt

Model and dataset collections

We can also provide model collection names (openai, openclip_base, openclip_multilingual, openclip_full are supported) or dataset collection names (vtab, vtab+, retrieval, imagenet_robustness are supported):

clip_benchmark eval --pretrained_model openai openclip_base  --dataset vtab+ retrieval \
--dataset_root "clip_benchmark_datasets/{dataset}" --not quiet \
--output "{dataset}_{pretrained}_{model}_{language}_{task}.json"

See clip_benchmark/models.py#L6 and clip_benchmark/datasets/builder.py#L634 for more information about the collections.

Development

For development, you can also do this:

git clone https://github.com/LAION-AI/CLIP_benchmark
cd CLIP_benchmark
python setup.py install

Credits

• Thanks to OpenCLIP authors, zero-shot accuracy code is adapted from there and pre-trained models are used in the command line interface.
• Thanks to SLIP authors, some zero-shot templates and classnames are from there.
• Thanks to Wise-ft authors, Imagenet robustness datasets code is adapted from there
• Thanks to LiT authors, some zero-shot templates and classnames of VTAB datasets are from there.
• This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template. Thanks to the author.