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Abdulkareeem Alzahrani

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Open access Jul 2026

On the Optimality of k=n in k-Nearest Neighbor Classification: Sub-Optimality Rates, Dimension-Aware Selection, and Hassanat Distance Comparison

The theoretical results provide a principled non-cross-validated alternative to the classical n rule, and cross-validation remains the strongest k-selection strategy when computationally feasible.

Ahmad Hassanat, A. A. Alkasasbeh, Esra’a Alkafaween et al. · 1 citation