Author

Long D. Nguyen

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#machine learning Preprint Oct 2026

Valid for Free: Homophily-Gated Conformal Prediction for Training-Free Node Classification with Tabular Foundation Models

Tabular foundation models (TFMs) can classify the nodes of a graph without training on it, by reading node and neighborhood features as table rows next to labeled context rows. Work in this line reports predictive performance, not conformal coverage or prediction-set size. To our knowledge, we give the first reliabilit...

Long D. Nguyen, Hiển Minh Phùng, Viet Trong Nguyen et al. · 0 citations

Preprint Aug 2026

Geometry-Informed Parameter-Efficient Fine-Tuning of Pre-trained Molecular GNNs for Blood-Brain Barrier Permeability Prediction

BBBP-GeoPEFT is proposed, a geometry-informed PEFT framework for pre-trained molecular GNNs that preserves pre-trained knowledge while incorporating permeability-relevant geometric information with a small trainable-parameter budget.

Marco Vieto Vega, Long D. Nguyen, Binh P. Nguyen · 0 citations