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Cong-Duy Nguyen

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#computer vision Preprint Aug 2026

STRAND: Benchmarking and Improving Object-Centric Spatio-Temporal Monitoring in Video Large Language Models

STRAND is introduced, a benchmark of human-verified object-centric facts that evaluates intermediate reasoning by decomposing queries into sub-questions, distinguishing genuine temporal understanding from coincidental correctness and an object-centric framework that explicitly constructs and reasons over structured obj...

T. Nguyen, Tri Cao, Khoi M. Le et al. · 0 citations
Preprint Aug 2026

DynaPix: Can Vision-Language Models Identify the Exact Future?

DynaPix (Dynamic Pixels), a benchmark that makes prediction checkable, exposes a temporal-anchoring gap: models attach a prediction to an event far better than to time itself.

T. Nguyen, Vinh-Hien Do, Quynh T. N. Vo et al. · 0 citations
Jul 2026

When Depth Is Better Told Than Shown: Depth-Ordinal Prompting for Vision-Language Spatial Reasoning

This work proposes Depth-Ordinal Prompting (DOP), a training-free method that converts monocular depth into a single question-targeted ordinal text cue at the queried objects, without adding a depth image, training a module, injecting features, or using labels.

Quynh T. N. Vo, Phuc T. Dao, Cong-Duy Nguyen et al. · 0 citations
#artificial intelligence Preprint Aug 2026

Reinforcing Step-level Reasoning for Effective Self-Correction in LLMs

Comprehensive in-domain and out-of-domain evaluations across multiple LLMs demonstrate that SFS-DPO and SFS-DPO-R consistently outperform prior step-level training baselines and reveal improvements in self-correction frequency and effectiveness.

Duc Anh Vu, Nhat M. Hoang, Do-Xuan Long et al. · 1 citation

Don't Read Everything: A Curvature-Conditioned Query for Linear Attention

Curvature-Conditioned Query modifies only the read step and is composable with any linear-attention backbone, and improves perplexity, zero-shot downstream accuracy, S-NIAH retrieval at and beyond the training context, length-extrapolation perplexity from 4K to 20K, and LongBench accuracy.

D. Le, Thong Nguyen, Cong-Duy Nguyen et al. · 1 citation

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