google-deepmind / google-deepmind/kinetics-i3d

Is it better to train from scratch on Kinetics-600?

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Hi,
I wonder why you only release checkpoint on Kinetics-600 trained from scratch but not from ImageNet pre-trained parameters.
In the paper, performance is better with ImageNet pre-training on Kinetics-400 dataset.
Is it better to train from scratch on Kinetics-600 dataset?

Thanks!

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