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Caihong Wang

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#machine learning Preprint Oct 2026

Random Projections for Spectral Algorithms: Optimal Rates in Sobolev Norms

Random projections (RP) offer an effective method for reducing computational and storage overhead while preserving the geometric structure of data. However, existing studies have primarily focused on the optimal generalization performance of specific kernel-regularized algorithms with RP in the well-specified setting a...

Cai-Hong Wang, Yue Wang · 0 citations
Preprint Aug 2026

Adaptive Regularization for Random Features: A Neighboring Early-Stopping Rule with Oracle-Rate Guarantees

This work proposes a neighboring early-stopping rule for adaptive regularization in KRR with random features (KRR-RF), using a grid that is uniform in inverse regularization and compares only adjacent estimators, reducing the number of discrepancy comparisons relative to standard all-pairs Lepskii-type procedures.

Caihong Wang, Zhi-Bo Chen, Yue Wang · 0 citations

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