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Jiacheng Ma

2 accepted papers

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
2021

Towards Understanding the Generative Capability of Adversarially Robust Classifiers

ICCV 2021poster

Recently, some works found an interesting phenomenon that adversarially robust classifiers can generate good images comparable to generative models. We investigate this phenomenon from an energy perspective and provide a novel explanation. We reformulate adversarial example generation, adversarial t…

Cited by 24PDFcodeScholar