collaborators

7 papers

cs.AI2026

Open-MMUnlearning: Unifying Methods and Evaluation for MLLM Unlearning

Junkai Chen, Yuhao He, Qianshan Wei +19

As multimodal large language models (MLLMs) become more capable and widely deployed, concerns about privacy and safety have become increasingly pressing. Machine unlearning offers…

cs.AI2026

Exploring and Bridging Knowledge Holes in Unlearned Multimodal Large Language Models

Junxiang You, Junkai Chen, Yuhao He +3

Machine unlearning offers a promising approach to remove unsafe content from Multimodal Large Language Models (MLLMs), yet ensuring the precision of unlearning remains a persistent…

cs.LG2026

When Should Active RAG Retrieve? A Budget-Aware Evaluation of Utility, Calibration, and Cost

Pin Qian, Su Wang, Chong Peng +5

Active RAG systems decide when to retrieve external knowledge during generation, making them a budget-sensitive case of agentic RAG and self-adaptive retrieval. Yet evaluations oft…

cs.LG2026

Toward User-Conditioned Evaluation of Personal LLM Agents under Temporal Interventions

Pin Qian, Su Wang, Yihang Chen +5

Personal agents maintain memories, learned skills, tool configurations, and policy state that evolve with each user. Existing agent benchmarks often evaluate these capabilities in…

cs.SE2026

When Safe Skills Collide: Measuring Compositional Risk in Agent Skill Ecosystems

Su Wang, Pin Qian, Yihang Chen +6

LLM agents increasingly rely on community-contributed skills that expand an agent's operational capability set. We study a core safety problem in agentic AI systems: whether indivi…

cs.AI2026

Relevant Is Not Warranted: Evidence-Force Calibration for Cited RAG

Pin Qian, Su Wang, Xiaoyuan Wang +7

Cited RAG evaluation often treats visible sources as a grounding signal, but a real, topically relevant citation can still under-warrant the attached wording. We study this diagnos…

cs.CV2026

Visual-Noise Guided In-Context Distillation for Multimodal Large Language Model Unlearning

Junkai Chen, Yuhao He, Junxiang You +3

Multimodal Large Language Models (MLLMs) have achieved remarkable progress on vision-language tasks, but they may also memorize and expose sensitive or restricted knowledge, raisin…