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Zhikang Xu

3 accepted papers

2026

Mind the Way You Select Negative Texts: Pursuing the Distance Consistency in OOD Detection with VLMs

CVPR 2026

Out-of-distribution (OOD) detection seeks to identify samples from unknown classes, a critical capability for deploying machine learning models in open-world scenarios. Recent research has demonstrated that Vision-Language Models (VLMs) can effectively leverage their multi-modal representations for

Cited by 0SourcecodeScholar
2023

Fighting against Organized Fraudsters Using Risk Diffusion-based Parallel Graph Neural Network

IJCAI 2023poster

Medical insurance plays a vital role in modern society, yet organized healthcare fraud causes billions of dollars in annual losses, severely harming the sustainability of the social welfare system. Existing works mostly focus on detecting individual fraud entities or claims, ignoring hidden conspira…

Cited by 14SourcePDFScholar
2023

Trusted Fine-Grained Image Classification through Hierarchical Evidence Fusion

AAAI 2023technical

Fine-Grained Image Classification (FGIC) aims to classify images into specific subordinate classes of a superclass. Due to insufficient training data and confusing data samples, FGIC may produce uncertain classification results that are untrusted for data applications. In fact, FGIC can be viewed as…

Cited by 9SourcePDFScholar