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Zi-Wei Chen

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Open access Sep 2026

Multi-Algorithm Optimization of Explanation Stability in Ensemble Learning for Human Capital Attrition Risk Prediction

Attrition models are tuned for discrimination, but the decision they support is a ranking of retention drivers, and nothing requires that ranking to survive retraining. We treat its reproducibility as an objective: hyperparameter optimization for an ensemble of gradient-boosted and bagged learners becomes a bi-objectiv...

Zi-He Qi, Zi-Wei Chen, Fan Si · 0 citations
Open access Aug 2026

Blockage-Aware Power Allocation Algorithm for Millimeter-Wave Communication with Dynamic Reward Q-Learning

A lightweight distributed power-allocation framework in which each base station independently updates a tabular Q-learning policy using locally observable blockage-ratio, serving-distance, and aggregate-interference information, which achieves performance comparable to fixed Q-learning while retaining a transparent blo...

Zhuoning Yang, Zi-Wei Chen · 0 citations

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