4 papers
DSPrompt: Dynamic Soft Prompt Defense Against M-RAG Corruption
Chang Liu, Yuni Lai, Mingyue Cui +5
Multimodal Retrieval Augmented Generation (M-RAG) is increasingly vulnerable to adversarial attacks where malicious data are crafted to produce embeddings that align with benign en…
FTA-Mem: Fact-Time-Affect Anchored Memory for Low-Density Long-Term Dialogue
Chang Liu, Shuyi Zhang, Changsheng Ma +3
Long-term emotional-support agents require memory mechanisms for personalized understanding across sessions. However, emotional-support dialogue is often low-density: turns are inc…
Adaptive Heterogeneous Compression for Resource-Efficient Federated Knowledge Distillation
Chenwang Liu, Yijun Liu, Chang Liu +2
Federated learning (FL) enables privacy-preserving distributed model training but faces challenges from heterogeneous model architectures and limited communication resources at the…
A Lifecycle-Oriented Detection and Defense Framework for Price Manipulation Attacks in DeFi
Xingyu Xiong, Chang Liu, Xiaoqi Li
Aiming at frequent oracle price manipulation attacks in Decentralized Finance (DeFi), this paper investigates attack patterns, vulnerability types, risk assessment, automated detec…