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Runhua Xu

5 accepted papers

2026

FRoD: Full-Rank Efficient Fine-Tuning with Rotational Degrees for Fast Convergence

AAAI 2026technical

Parameter-efficient fine-tuning (PEFT) methods have emerged as a practical solution for adapting large foundation models to downstream tasks, reducing computational and memory costs by updating only a small subset of parameters. Among them, approaches like LoRA aim to strike a balance between effici

Cited by 0SourcePDFScholar
2026

Position: The Privacy-Auditability Paradox in Federated Learning: Why We Need Controllable Secure Aggregation

ICML 2026poster

Federated Learning (FL) has become the de facto standard for privacy-preserving intelligence, largely due to Secure Aggregation protocols that guarantee the mathematical invisibility of individual user contributions. However, we contend that this pursuit of perfect privacy has engineered a systemic …

Cited by 0SourceScholar
2026

Sparsification Under Siege: Dual-Level Defense Against Poisoning in Communication-Efficient Federated Learning

IJCAI 2026

Gradient sparsification, while mitigating communication bottlenecks in Federated Learning (FL), fundamentally alters the geometric landscape of model updates. We reveal that the resultant high-dimensional orthogonality renders traditional Euclidean-based robust aggregation metrics mathematically amb

Cited by 0Scholar
2025

FLUE: Streamlined Uncertainty Estimation for Large Language Models

AAAI 2025technical

Uncertainty estimation is essential for practical applications such as decision-making, risk assessment, and human-AI collaboration. However, Uncertainty estimation in open-ended question-answering (QA) tasks presents unique challenges. The output space for open-ended QA is vast and discrete, and th…

Cited by 0SourcePDFScholar
2024

Dual Defense: Enhancing Privacy and Mitigating Poisoning Attacks in Federated Learning

NeurIPS 2024poster

Federated learning (FL) is inherently susceptible to privacy breaches and poisoning attacks. To tackle these challenges, researchers have separately devised secure aggregation mechanisms to protect data privacy and robust aggregation methods that withstand poisoning attacks. However, simultaneously…