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math.OC2025
Near-Linear Runtime for a Classical Matrix Preconditioning Algorithm
Xufeng Cai, Jason M. Altschuler, Jelena Diakonikolas
In 1960, Osborne proposed a simple iterative algorithm for matrix balancing with outstanding numerical performance. Today, it is the default preconditioning procedure before eigenv…
cs.IR2025
HyperZero: A Customized End-to-End Auto-Tuning System for Recommendation with Hourly Feedback
Xufeng Cai, Ziwei Guan, Lei Yuan +11
Modern recommendation systems can be broadly divided into two key stages: the ranking stage, where the system predicts various user engagements (e.g., click-through rate, like rate…