activity
20242026
most citedNot All Entities are Created Equal: A Dynamic Anonymization Framework for Privacy-Preserving RAG

1 citations · 1 across the 6 of their papers we have counts for

collaborators

6 papers

cs.AI2026

When Should a VLM Look? Paying Only for Visual Calls That Were Needed and Used

Kunyu Peng, Junming Liu, Ruiqi He +3

Vision-language agents that crop and zoom are trained with rewards that credit a successful tool call, yet a successful call does not show that the model needed to look or used the…

cs.AI2026

Agent Skills Matter: Inferring Proprietary Skills from Execution Trajectories

Jianing Geng, Ruiqi He, Zekun Fei +6

Agent skills package reusable procedures that improve downstream performance. Their lightweight, portable form enables marketplace monetization and private deployment behind cloud-…

cs.CR2026

Misrouter: Exploiting Routing Mechanisms for Input-Only Attacks on Mixture-of-Experts LLMs

Zekun Fei, Zihao Wang, Weijie Liu +4

Mixture-of-Experts (MoE) architectures have emerged as a leading paradigm for scaling large language models through sparse, routing-based computation. However, this design introduc…

cs.CR2026★ 1 cited

Not All Entities are Created Equal: A Dynamic Anonymization Framework for Privacy-Preserving RAG

Xinyuan Zhu, Zekun Fei, Enye Wang +5

Retrieval-Augmented Generation (RAG) enhances the utility of Large Language Models (LLMs) by retrieving external documents. Since the knowledge databases in RAG are predominantly u…

cs.IR2025

Transform Before You Query: A Privacy-Preserving Approach for Vector Retrieval with Embedding Space Alignment

Ruiqi He, Zekun Fei, Jiaqi Li +5

Vector Database (VDB) can efficiently index and search high-dimensional vector embeddings from unstructured data, crucially enabling fast semantic similarity search essential for m…

cs.CR2024

Your Semantic-Independent Watermark is Fragile: A Semantic Perturbation Attack against EaaS Watermark

Zekun Fei, Biao Yi, Jianing Geng +3

Embedding-as-a-Service (EaaS) has emerged as a successful business pattern but faces significant challenges related to various forms of copyright infringement, particularly, the AP…