activity
20242026
collaborators

9 papers

cs.CR2026

PPE-Bench: A Benchmark for Evaluating MLLM Unlearning under Private-Public Entanglement

Xianren Zhang, Delvin Ce Zhang, Dongwon Lee +1

Multimodal Large Language Models (MLLMs) have shown strong capabilities, but they may memorize private information from web data, raising privacy concerns. Machine unlearning offer…

cs.CL2026

A Functionality-Grounded Benchmark for Evaluating Web Agents in E-commerce Domains

Xianren Zhang, Shreyas Prasad, Di Wang +4

Web agents have shown great promise in performing many tasks on ecommerce website. To assess their capabilities, several benchmarks have been introduced. However, current benchmark…

cs.SE2026

GraphSkill: Documentation-Guided Hierarchical Retrieval-Augmented Coding for Complex Graph Reasoning

Fali Wang, Chenglin Weng, Xianren Zhang +3

The growing demand for automated graph algorithm reasoning has attracted increasing attention in the large language model (LLM) community. Recent LLM-based graph reasoning methods…

cs.CL2026

MEVER: Multi-Modal and Explainable Claim Verification with Graph-based Evidence Retrieval

Delvin Ce Zhang, Suhan Cui, Zhelin Chu +2

Verifying the truthfulness of claims usually requires joint multi-modal reasoning over both textual and visual evidence, such as analyzing both textual caption and chart image for…

cs.CV2026

Image Corruption-Inspired Membership Inference Attacks against Large Vision-Language Models

Zongyu Wu, Minhua Lin, Zhiwei Zhang +4

Large vision-language models (LVLMs) have demonstrated outstanding performance in many downstream tasks. However, LVLMs are trained on large-scale datasets, which can pose privacy…

cs.LG2025

SUA: Stealthy Multimodal Large Language Model Unlearning Attack

Xianren Zhang, Hui Liu, Delvin Ce Zhang +4

Multimodal Large Language Models (MLLMs) trained on massive data may memorize sensitive personal information and photos, posing serious privacy risks. To mitigate this, MLLM unlear…