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arXiv · 2605.09652

RDEx-CASK: Cauchy Mutation, Archive, and Stagnation Kick for RDEx-CSOP

Dikshant·Dikshit Chauhan·Chen Hao·Anupam Trivedi·Harikumar Kandath·Senthilnath Jayavelu
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Abstract

We extend RDEx-CSOP with 3 changes that target stagnation & late-stage variance, plus minor parameter tuning. The second scale factor in the standard branch is sampled independently from a truncated Cauchy. A small feasible-only JADE-style archive (|A|_max = 50) is added & sampled with probability |A|/(|A|+|P|). Per-individual stagnation counter triggers, after 180 no-improvement generations, three local overrides on standard branch: pull toward the global best, lift the archive sampling floor to 0.65, & saturate CR to 0.95 when population success rate is below 0.10. The exploitation biased branch & every other RDEx component are left untouched. On CEC CSOP suite (D=30, 25 runs), RDEx-CASK is competitive with RDEx, UDE-III, & CL-SRDE in feasibility-aware quality & improves time-to-target on most problems.

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Dikshant, Dikshit Chauhan, Chen Hao, Anupam Trivedi, Harikumar Kandath, Senthilnath Jayavelu. 2026-05-10. RDEx-CASK: Cauchy Mutation, Archive, and Stagnation Kick for RDEx-CSOP. https://arxiv.org/abs/2605.09652

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