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Author

Khai Le-Duc

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#artificial intelligence Preprint Oct 2026

Where Do Vision Language Models Fail at 3D Reasoning?

Vision-language models can get individual judgments right while struggling to recover and consistently use the exact properties of a 3D object. To characterize this gap, we introduce BedBench, a controlled benchmark of thirteen procedurally generated tasks spanning individual judgments and composite answers. Across twe...

Khai Le-Duc, Nguyen Kim Hai Bui, An Ngo et al. · 1 citation

VietMed: A Dataset and Benchmark for Automatic Speech Recognition of Vietnamese in the Medical Domain

VietMed is a Vietnamese speech recognition dataset in the medical domain comprising 16h of labeled medical speech, 1000h of unlabeled medical speech and 1200h of unlabeled general-domain speech, and the first public large-scale pre-trained models for Vietnamese ASR, w2v2-Viet and XLSR-53-Viet are released along with th...

Khai Le-Duc · 20 citations
#machine learning Preprint Sep 2026

RAPTOR: Role-Aware Private Training for Mixture-of-Experts

This work introduces RAPTOR - a Role-Aware Private Training framework, which alternates shared and expert optimization and targets each failure directly, using expert-specific clipping and noise together with a public expected-owner denominator and a count-independent update schedule that avoids conditioning on private...

Duc Dm, Khai Le-Duc, D. Nguyen et al. · 0 citations
Open access Jul 2026

A wearable device dataset for mental health assessment using laser Doppler flowmetry and fluorescence spectroscopy sensors.

Wearable optical sensing combined with interpretable machine learning provides physiological signatures associated with stress-related mental health conditions and supports development of scalable and data-driven tools for objective mental health monitoring.

Minh Ngoc Binh Nguyen, Khai Le-Duc, Tan-Hanh Pham et al. · 1 citation

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