Metamodel Selection and Hyperparameter Tuning for Hybrid Optimization with a Quantum-Inspired Evolutionary Algorithm in Multiple Drop-Test Simulation
Abstract
This study introduces a hybrid optimization framework for the multi-drop testing of a lithium-ion battery enclosure. The framework integrates a quantum-inspired evolutionary algorithm (QEA) with surrogate modeling techniques. The contribution of the present study lies in metamodel selection, hyperparameter tuning, and the evaluation of two hybrid integration strategies built on a previously published QEA framework. Three types of metamodels were applied, artificial neural networks (ANNs), Kriging, and polynomial regression (PNR), using datasets generated via Latin hypercube sampling and from prior QEA iterations. Hyperparameter tuning methods constitute the main part of the study. Two fitness functions were analyzed, including a logarithmically scaled variant designed to compress the output range for damaged cases and enhance classification accuracy near the damage/no-damage boundary. A dual-model strategy was employed for the ANN, with model switching determined by a plastic strain threshold. Across the tested datasets, the ANN frequently identified low-objective individuals, while PNR occasionally exhibited instability. Two hybrid schemes were implemented: HYBRID1 yielded the lowest objective values in the reported runs, whereas HYBRID2 reduced runtime and showed a steadier optimization course, at a slight cost to the best obtained objective value. Within the analyzed QEA-based workflow, the combination of QEA, ANN, and the second objective fitness function (FF2) reduced finite element method (FEM) computational time by an order of magnitude while maintaining decision-making effectiveness. These results support the proposed hybridization as a practical improvement of the existing QEA workflow for the studied multi-drop test problem.
Keywords:
surrogate modeling, metamodel selection, hyperparameter tuning, artificial neural network, Kriging, polynomial regression, quantum-inspired evolutionary algorithm, multi-drop test, battery housingReferences
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