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About: 4th Face Anti-spoofing Workshop and Challenge@CVPR2023, Wild Track

Open Xianhua-He opened this issue 2 years ago • 10 comments

  1. Whether the dev data(dev.txt) can be added to the training, such as self-supervised pre-training or unsupervised?
  2. Whether the final calculation process is to find the best threshold on the prediction score of the dev set(dev.txt) and then use the defined threshold to calculate the ACER on the test set (test.txt)?

Xianhua-He avatar Mar 13 '23 08:03 Xianhua-He

I have some questions need to be answered ! 3. The rule of this contest need only single model, but if loading more than 1 checkpoint for single model is allowed ? 4. About the pretrained weights all team can't use: 'Any extra data or pretrained model trained from extra data cannot be used'. By the standard challenge i joined, i know this rule means "Not using any pretrained model trained from extra data related this challenge (something like pretrained of Anti-Spoofing face or relate task of face), but ImageNet is allowed". If the host only want model trained from scratch, please note it before competition beginning. Not until last week you just notice ! I hope the host consider this rule, not only me, all team spend a lot of time and resource for training and evaluating.

oggyfaker avatar Mar 14 '23 06:03 oggyfaker

@Xianhua-He

  1. it depends on how you use it, we will check.
  2. yes.

nttstar avatar Mar 14 '23 07:03 nttstar

@oggyfaker 3. the total FLOPs need to match our rule(<=5G FLOPs) 4. ImageNet is not allowed according to our rules, it is also an external dataset.

nttstar avatar Mar 14 '23 07:03 nttstar

If ImageNet can be used, why can't MS-COCO be used? There're various subsets such as ImageNet-1K, ImageNet-11K, and ImageNet-21K, and there are also different clean versions, which bring another kind of unfairness.

nttstar avatar Mar 14 '23 07:03 nttstar

Will labels for dev.txt be provided before the end of the competition for local validation?

AlexanderParkin avatar Mar 14 '23 14:03 AlexanderParkin

@AlexanderParkin No

nttstar avatar Mar 14 '23 14:03 nttstar

Is test time augmentation allowed in the final test phase? E.g. averaging score from multiple views of image inferenced from the same model.

agikarasugi avatar Mar 21 '23 08:03 agikarasugi

No @agikarasugi

nttstar avatar Mar 21 '23 08:03 nttstar

So unannotated dev data(dev.txt) can be used for training? @nttstar

stormand avatar Mar 22 '23 04:03 stormand

@stormand Yes, and depends on how you use it, we will check.

nttstar avatar Mar 22 '23 08:03 nttstar