Search Results for author: Zixin Wen

Found 4 papers, 0 papers with code

The Mechanism of Prediction Head in Non-contrastive Self-supervised Learning

no code implementations12 May 2022 Zixin Wen, Yuanzhi Li

The substitution effect happens when learning the stronger features in some neurons can substitute for learning these features in other neurons through updating the prediction head.

Self-Supervised Learning

Improving Multi-Modal Learning with Uni-Modal Teachers

no code implementations21 Jun 2021 Chenzhuang Du, Tingle Li, Yichen Liu, Zixin Wen, Tianyu Hua, Yue Wang, Hang Zhao

We name this problem Modality Failure, and hypothesize that the imbalance of modalities and the implicit bias of common objectives in fusion method prevent encoders of each modality from sufficient feature learning.

Image Segmentation Semantic Segmentation

Toward Understanding the Feature Learning Process of Self-supervised Contrastive Learning

no code implementations31 May 2021 Zixin Wen, Yuanzhi Li

We present an underlying principle called $\textbf{feature decoupling}$ to explain the effects of augmentations, where we theoretically characterize how augmentations can reduce the correlations of dense features between positive samples while keeping the correlations of sparse features intact, thereby forcing the neural networks to learn from the self-supervision of sparse features.

Contrastive Learning Self-Supervised Learning

Convergence of End-to-End Training in Deep Unsupervised Contrastive Learning

no code implementations17 Feb 2020 Zixin Wen

Unsupervised contrastive learning has gained increasing attention in the latest research and has proven to be a powerful method for learning representations from unlabeled data.

Contrastive Learning

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