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T. Kieu

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#artificial intelligence Preprint Oct 2026

Agentic4PDM: Host-Governed Evidence Admissibility for Industrial Fault Diagnosis

We study industrial fault diagnosis as a classification task that assigns sensor time-series windows to predefined health states or fault types. Scarce labels and changing operating conditions make repeated training of specialized classifiers costly. Yet structures such as periodicity, trends, and transients can remain...

Nam V. Nguyen, Hoa Van Truong, D. HieuD et al. · 0 citations
#artificial intelligence Preprint Sep 2026

When Correlations Mislead: Confounder-Aware Multi-View Urban Region Representation Learning

Urban region representation learning commonly combines heterogeneous data sources, such as mobility flows, points of interest, and land-use information, to support tasks including mobility analysis, public safety forecasting, and service demand estimation. Existing multi-view methods typically improve region embeddings...

Sean Bin Yang, Ying Sun, Zong-Yi Xu et al. · 0 citations
#machine learning Preprint Sep 2026

EPIC: Explicit Posterior Item Conditioning for Semantic ID Diffusion Recommendation

Semantic ID (SID) generative recommendation predicts the next item by generating a short tuple of discrete tokens. Recent masked-diffusion methods improve this process through bidirectional context and flexible decoding, yet recommendation ultimately requires selecting among complete catalog items. At each denoising st...

Tuan-Binh Tran, T. Nguyen, Quoc Viet Hung Nguyen et al. · 0 citations
Preprint Aug 2026

When Denoising Hurts: Rethinking the Terminal Step of Diffusion Time Series Forecasters -- Extended Version

This study examines how forecast quality evolves throughout reverse diffusion to find that general temporal structure is often recovered at relatively high noise levels, whereas continued low-noise refinement can introduce statistical drift and degrade the final forecast.

Dat Nguyen-Cong, L. Tran, T. Kieu · 0 citations

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