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Weixiang Li

3 accepted papers

2026

From Parameters to Feature Space: Task Arithmetic for Backdoor Mitigation in Model Merging

ICML 2026poster

Model merging (MM) has gained significant attention as a cost-effective approach to integrate multiple task-specific models into a unified model. However, recent work reveals that MM is highly susceptible to backdoor attacks. Existing defenses based on task arithmetic often fail to eliminate backdoo…

Cited by 0SourceScholar
2025

Guard Me If You Know Me: Protecting Specific Face-Identity from Deepfakes

NeurIPS 2025poster

Securing personal identity against deepfake attacks is increasingly critical in the digital age, especially for celebrities and political figures whose faces are easily accessible and frequently targeted. Most existing deepfake detection methods focus on general-purpose scenarios and often ignore th…

Cited by 0SourcecodeScholar
2025

Standing on the Shoulders of Giants: Reprogramming Visual-Language Model for General Deepfake Detection

AAAI 2025technical

The proliferation of deepfake faces poses huge potential negative impacts on our daily lives. Despite substantial advancements in deepfake detection over these years, the generalizability of existing methods against forgeries from unseen datasets or created by emerging generative models remains cons…

Cited by 2SourcePDFScholar