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Tang Sui

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#machine learning Preprint Oct 2026

SPD-MetaFormer is what you need for small-data brain decoding

Brain signal decoding is challenging because neural recordings are noisy and vary across individuals, while labeled data are often limited. Recent attention-based models on the symmetric positive definite (SPD) manifold have nevertheless achieved strong performance using covariance and connectivity representations, yet...

Zhi-Da Wang, Wei Lyu, Yu Guo et al. · 0 citations
Preprint Aug 2026

Beyond Invariant Dictionary: Data-Driven Koopman Spectral Recovery with Filtered Extended Dynamic Mode Decomposition

The Projected Koopman Operator Approximation framework for constructing Filtered EDMD operators is introduced, and under independent noiseless sampling and exact-rank identifiability, the resulting empirical operators converge almost surely to their population counterparts.

Si-Jin Chen, Igor Mezić, Tang Sui · 0 citations

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