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

arXiv: https://arxiv.org/abs/2605.09652 · HTML: https://mlsanity.com/paper/2605.09652/

## Key facts

- No citing papers in the map yet (data through 14 Oct 2026).
- Builds on 2 of its 2 references that are in the map.
- First posted on arXiv 10 May 2026.

## Builds on (most cited first, 2 of 2)

- [UDE-III: An Enhanced Unified Differential Evolution Algorithm for Constrained Optimization Problems](https://mlsanity.com/paper/2410.03992/) (2024)
- [RDEx-CSOP: Feasibility-Aware Reconstructed Differential Evolution with Adaptive epsilon-Constraint Ranking](https://mlsanity.com/paper/2603.27090/) (2026)

## Abstract (arXiv)

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.