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Alec S. Xu

2 accepted papers

2025

MonarchAttention: Zero-Shot Conversion to Fast, Hardware-Aware Structured Attention

NeurIPS 2025spotlight

Transformers have achieved state-of-the-art performance across various tasks, but suffer from a notable quadratic complexity in sequence length due to the attention mechanism. In this work, we propose MonarchAttention -- a novel approach to sub-quadratic attention approximation via Monarch matrices,…

Cited by 0SourcecodeScholar
2023

HeMPPCAT: Mixtures of Probabilistic Principal Component analysers for data with heteroscedastic noise

ICASSP 2023accepted

Mixtures of probabilistic principal component analysis (MPPCA) is a well-known mixture model extension of principal component analysis (PCA). Similar to PCA, MPPCA assumes the data samples in each mixture contain homoscedastic noise. However, datasets with heterogeneous noise across samples are beco…

Cited by 0SourceScholar