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Jiafei Wu

16 accepted papers

2026

Class Incremental Medical Image Segmentation via Prototype-Guided Calibration and Dual-Aligned Distillation

AAAI 2026technical

Class incremental medical image segmentation (CIMIS) aims to preserve knowledge of previously learned classes while learning new ones without relying on old-class annotations. However, existing methods 1) either adopt one-size-fits-all strategies that treat all spatial regions and feature channels e

Cited by 0SourcePDFScholar
2026

Fair in Mind, Fair in Action? A Synchronous Benchmark for Understanding and Generation in UMLLMs

ICLR 2026poster

As artificial intelligence (AI) is increasingly deployed across domains, ensuring fairness has become a core challenge. However, the field faces a "Tower of Babel'' dilemma: fairness metrics abound, yet their underlying philosophical assumptions often conflict, hindering unified paradigms—particular…

Cited by 0SourceScholar
2026

HoloFair: Unified T2I Fairness Evaluation and Fair-GRPO Debiasing

ICML 2026poster

Text-to-Image (T2I) models have made significant strides in visual realism and semantic consistency, yet they often perpetuate and amplify societal biases. Existing evaluation methods typically address only single-dimensional biases, lacking perspectives to uncover model biases at social-related dee…

Cited by 0SourceScholar
2026

Robust-R1: Degradation-Aware Reasoning for Robust Visual Understanding

AAAI 2026technical

Multimodal Large Language Models struggle to maintain reliable performance under extreme real-world visual degradations, which impede their practical robustness. Existing robust MLLMs predominantly rely on implicit training/adaptation that focuses solely on visual encoder generalization, suffering f

Cited by 0SourcePDFScholar
2025

An Optimized GPU-based Acceleration of CRYSTALS-Dilithium

ICASSP 2025accepted

CRYSTALS-Dilithium has recently been selected as one of the next generation post-quantum signature algorithm standards. However, due to the extensive volume of data elements and the high complexity of operations, post-quantum cryptographic algorithms commonly face significant performance challenges,…

Cited by 0SourceScholar
2025

DR-Encoder: Encode Low-rank Gradients with Random Prior for Large Language Models Differentially Privately

AAAI 2025technical

The emergence of the large language model (LLM) has shown its superiority in a wide range of disciplines, including language understanding and translation, relational logic reasoning, and even partial differential equations solving. The transformer is the pervasive backbone architecture for the foun…

2025

Differential Private Stochastic Optimization with Heavy-tailed Data: Towards Optimal Rates

AAAI 2025technical

We study convex optimization problems under differential privacy (DP). With heavy-tailed gradients, existing works achieve suboptimal rates. The main obstacle is that existing gradient estimators have suboptimal tail property, resulting in a superfluous factor of d in the union bound. In this paper,…

Cited by 4SourcePDFScholar
2025

Enhancing Learning with Label Differential Privacy by Vector Approximation

ICLR 2025spotlight

Label differential privacy (DP) is a framework that protects the privacy of labels in training datasets, while the feature vectors are public. Existing approaches protect the privacy of labels by flipping them randomly, and then train a model to make the output approximate the privatized label. Howe…

Cited by 2SourcePDFScholar
2025

HARMONY: A Privacy-preserving and Sensor-agnostic Tele-monitoring system

IJCAI 2025

Global aging necessitates tele-monitoring systems to provide real-time tracking and timely assistance for older adults living independently. While pervasive wireless devices (e.g., CSI, IMU, UWB) enable cost-effective, non-intrusive monitoring, existing systems lack flexibility, limiting their adapt

Cited by 0SourcePDFScholar
2025

Learnable Feature Patches and Vectors for Boosting Low-light Image Enhancement without External Knowledge

ICCV 2025poster

A major challenge in Low-Light Image Enhancement (LLIE) is its ill-posed nature: low-light images often lack sufficient information to align with normal-light ones (e.g., not all training data can be fully fitted to the ground truth). Numerous studies have attempted to bridge the gap between low- an…

Cited by 0SourcePDFScholar
2025

Low-Light Video Enhancement via Spatial-Temporal Consistent Decomposition

IJCAI 2025

Low-Light Video Enhancement (LLVE) seeks to restore dynamic or static scenes plagued by severe invisibility and noise. In this paper, we present an innovative video decomposition strategy that incorporates view-independent and view-dependent components to enhance the performance of LLVE. We leverage

Cited by 0SourcePDFScholar
2025

UCF-Crime-DVS: A Novel Event-Based Dataset for Video Anomaly Detection with Spiking Neural Networks

AAAI 2025technical

Video anomaly detection plays a significant role in intelligent surveillance systems. To enhance model's anomaly recognition ability, previous works have typically involved RGB, optical flow, and text features. Recently, dynamic vision sensors (DVS) have emerged as a promising technology, which capt…

2024

A Huber Loss Minimization Approach to Mean Estimation under User-level Differential Privacy

NeurIPS 2024poster

Privacy protection of users' entire contribution of samples is important in distributed systems. The most effective approach is the two-stage scheme, which finds a small interval first and then gets a refined estimate by clipping samples into the interval. However, the clipping operation induces bia…

Cited by 7SourcePDFScholar
2023

Enlightening the Student in Knowledge Distillation

ICASSP 2023accepted

Knowledge distillation is a common method of model compression, which uses large models (teacher networks) to guide the training of small models (student networks). However, the student may find a hard time absorbing the knowledge from a sophisticated teacher due to the capacity and confidence gaps…

Cited by 0SourceScholar
2022

Novel Instance Mining with Pseudo-Margin Evaluation for Few-Shot Object Detection

ICASSP 2022accepted

Few-shot object detection (FSOD) enables the detector to recognize novel objects only using limited training samples, which could greatly alleviate model’s dependency on data. Most existing methods include two training stages, namely base training and fine-tuning. However, the unlabeled novel instan…

Cited by 0SourceScholar