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cs.LG2026
PolyStepOR: Learning to Decide Without Optimal Decisions
Viet The Nguyen, Gunther Gust, An Thai Le
Decision-focused learning (DFL) trains predictors for downstream decision quality, but often relies on optimal reference decisions that are expensive to obtain. We present PolyStep…
cs.LG2025
Persistent Homology-induced Graph Ensembles for Time Series Regressions
Viet The Nguyen, Duy Anh Pham, An Thai Le +2
The effectiveness of Spatio-temporal Graph Neural Networks (STGNNs) in time-series applications is often limited by their dependence on fixed, hand-crafted input graph structures.…