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Yu Zheng

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#machine learning Preprint Aug 2026

DiFA: Dual Evidence Fusion and Aggregation for Token-Level Text Anomaly Detection

A Dual-evidence framework with adaptive Fusion and Aggregation (DiFA) for token-level anomaly detection, which derives anomaly scores from form-structural and semantic views to capture visible structural abnormality and contextual inconsistency, thereby providing complementary evidence for identifying diverse anomalies...

Yan-Yu Qian, Peng-Cheng Weng, Yue Tan et al. · 0 citations
#machine learning Preprint Sep 2026

SIM: Subspace Interaction-based Method for Token-Level Text Anomaly Detection

A hard pseudo-anomaly generation module to construct pseudo-anomalous tokens, simulating the subtle anomalies obscured by semantic smoothing, and a probabilistic boundary loss is developed to standardize anomaly scores into statistical distances, effectively enforcing anomalous instances to deviate significantly from t...

Ke Yan, Yue Tan, Qing-Feng Chen et al. · 0 citations
Preprint Aug 2026

PaSta: Noisy Node Classification with Partial Label Learning

This paper proposes a novel Partial label-based Self-training framework (PaSta) that leverages partial label learning technique to overcome the limitations of existing methods and designs a partial label-based classification model with two well-crafted loss functions to guide the model learning at both label and repres...

Yu-Jing Liu, Yi-Xin Liu, Yu Zheng et al. · 0 citations

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