SMAUG: Sparse Masked Autoencoder for Efficient Video-Language Pre-training

• URL: http://arxiv.org/abs/2211.11446v2
• Date: Tue, 22 Nov 2022 17:27:37 GMT
• Title: SMAUG: Sparse Masked Autoencoder for Efficient Video-Language Pre-training
• Authors: Yuanze Lin, Chen Wei, Huiyu Wang, Alan Yuille, Cihang Xie
• Abstract summary: We develop SMAUG, an efficient pre-training framework for video-language models. Masking strategy considers both visual and textual modalities, providing a better cross-modal alignment. Space-time token sparsification module selects only "important" spatial regions and temporal frames for pre-training.
• Score: 25.256564703540953
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Video-language pre-training is crucial for learning powerful multi-modal representation. However, it typically requires a massive amount of computation. In this paper, we develop SMAUG, an efficient pre-training framework for video-language models. The foundation component in SMAUG is masked autoencoders. Different from prior works which only mask textual inputs, our masking strategy considers both visual and textual modalities, providing a better cross-modal alignment and saving more pre-training costs. On top of that, we introduce a space-time token sparsification module, which leverages context information to further select only "important" spatial regions and temporal frames for pre-training. Coupling all these designs allows our method to enjoy both competitive performances on text-to-video retrieval and video question answering tasks, and much less pre-training costs by 1.9X or more. For example, our SMAUG only needs about 50 NVIDIA A6000 GPU hours for pre-training to attain competitive performances on these two video-language tasks across six popular benchmarks.

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