Author

Tianchen Zhou

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Open access Jul 2026

PAST: Prior-Aware Sparse Transformer for Micro-Expression Recognition

The Prior-aware Sparse Transformer (PAST) is proposed, a novel Transformer-based architecture integrating spatial and semantic prior knowledge synergistically into a sparse attention mechanism, enabling linear-complexity processing of large amounts of fine-grained features.

Jiateng Liu, Tianchen Zhou, Heng-Can Shi et al. · Electronics · 0 citations