障壁制約付き探索での次元間共分散適応が誘発する欺瞞的アトラクタへの不可逆ドリフト
Cross-Dimensional Covariance Adaptation Induces Irreversible Drift Toward Deceptive Attractors in Barrier-Constrained Search
研究概要
障壁制約付き最適化における CMA-ES の、共分散に起因する不可逆ドリフトという失敗様式を研究する。
原文要旨（英語）
We report covariance-induced irreversible drift, a failure mode of CMA-ES in barrier-constrained optimization. Full CMA-ES systematically transitions from feasible to infeasible solutions through cross-dimensional covariance adaptation (73% drift rate vs 43% for sep-CMA-ES, Fisher p=0.018). The underlying landscape contains empirically disconnected feasible basins linked by directed, optimizer-dependent transitions. Population scaling experiments show complete separation (100% vs 0%) at lambda=200. Adaptive mitigation via reactive switching fails; preemptive variant selection is required.