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Xiong Zhang

9 accepted papers

2026

DR-GGAD: Dual Residual Centering for Mitigating Anomaly Non‑Discriminativity in Generalist Graph Anomaly Detection

ICLR 2026poster

Generalist Graph Anomaly Detection (GGAD) seeks a unified representation learning model to detect anomalies in unseen graphs, but cross-domain transfer often entangles the learned anomalous and normal representations. We formalize this degradation as Anomaly non-Discriminativity (AnD) and define a n…

Cited by 0SourceScholar
2025

GCTAM: Global and Contextual Truncated Affinity Combined Maximization Model For Unsupervised Graph Anomaly Detection

IJCAI 2025

Anomalies often occur in real-world information networks/graphs, such as malevolent users, malicious comments, banned users, and fake news in social graphs. The latest graph anomaly detection methods use a novel mechanism called truncated affinity maximization (TAM) to detect anomaly nodes without u

2025

IA-GGAD: Zero-shot Generalist Graph Anomaly Detection via Invariant and Affinity Learning

NeurIPS 2025spotlight

Generalist Graph Anomaly Detection (GGAD) extends traditional Graph Anomaly Detection (GAD) from one-for-one to one-for-all scenarios, posing significant challenges due to Feature Space Shift (FSS) and Graph Structure Shift (GSS). This paper first formalizes these challenges and proposes quantitativ…

Cited by 0SourcecodeScholar
2022

Convolutional Embedding Makes Hierarchical Vision Transformer Stronger

ECCV 2022poster

"Vision Transformers (ViTs) have recently dominated a range of computer vision tasks, yet it suffers from low training data efficiency and inferior local semantic representation capability without appropriate inductive bias. Convolutional neural networks (CNNs) inherently capture regional-aware sema…

Cited by 29SourcePDFScholar
2022

MobRecon: Mobile-Friendly Hand Mesh Reconstruction From Monocular Image

CVPR 2022poster

In this work, we propose a framework for single-view hand mesh reconstruction, which can simultaneously achieve high reconstruction accuracy, fast inference speed, and temporal coherence. Specifically, for 2D encoding, we propose lightweight yet effective stacked structures. Regarding 3D decoding, w…

Cited by 107PDFcodeScholar
2021

DCNAS: Densely Connected Neural Architecture Search for Semantic Image Segmentation

CVPR 2021poster

Existing NAS methods for dense image prediction tasks usually compromise on restricted search space or search on proxy task to meet the achievable computational demands. To allow as wide as possible network architectures and avoid the gap between realistic and proxy setting, we propose a novel Dense…

Cited by 136PDFScholar
2021

Hand Image Understanding via Deep Multi-Task Learning

ICCV 2021poster

Analyzing and understanding hand information from multimedia materials like images or videos is important for many real world applications and remains to be very active in research community. There are various works focusing on recovering hand information from single image, however, they usually sol…

Cited by 67PDFcodeScholar