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Author

Ashwin Padaki

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#machine learning Preprint Oct 2026

Attention via Black-Box Vector Search

This work unifies prior approaches through the framework of priority sampling, designing algorithms that establish a smooth tradeoff between the number of MIPS indices and number of retrieved keys and designing algorithms that outperform top-$k and sampling approaches used in prior work and yield attention approximatio...

Stepan Zharkov, Krish Singal, Ashwin Padaki et al. · 0 citations
Jul 2026

Learning Partition Trees for Nearest Neighbor Search

It is proved that without distributional assumptions, finding the optimal balanced halfspace is NP-hard, and an efficient improper learning algorithm is designed that outputs a balanced polynomial threshold function of degree 1 that cuts at most an $O(\sqrt{\alpha+\varepsilon})$ fraction.

Sanjeev Khanna, Ashwin Padaki, Erik Waingarten · 0 citations

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