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Lixu Wang

16 accepted papers

2026

FedRE: A Representation Entanglement Framework for Model-Heterogeneous Federated Learning

CVPR 2026

Federated learning (FL) enables collaborative training across clients while preserving privacy. While most existing FL methods assume homogeneous model architectures, client heterogeneity in both data and resources makes this assumption impractical, thus motivating model-heterogeneous FL. To address

Cited by 0SourcecodeScholar
2025

Can We Trust Embodied Agents? Exploring Backdoor Attacks against Embodied LLM-Based Decision-Making Systems

ICLR 2025poster

Large Language Models (LLMs) have shown significant promise in real-world decision-making tasks for embodied artificial intelligence, especially when fine-tuned to leverage their inherent common sense and reasoning abilities while being tailored to specific applications. However, this fine-tuning pr…

Cited by 5SourcePDFScholar
2025

FDPT: Federated Discrete Prompt Tuning for Black-Box Visual-Language Models

ICCV 2025poster

General-purpose Vision-Language Models (VLMs) have driven major advancements in multimodal AI. Fine-tuning these models with task-specific data enhances adaptability to various downstream tasks but suffers from privacy risks. While potential solutions like federated learning can address user data pr…

Cited by 0SourcePDFScholar
2025

Federated Continuous Category Discovery and Learning

ICCV 2025poster

Federated Learning (FL) studies often assume a static data distribution, whereas real-world scenarios involve dynamic changes. To address this gap, we study Federated Continuous Category Discovery and Learning (FC^2DL), an essential yet underexplored problem that enables FL models to evolve continuo…

Cited by 0SourcePDFScholar
2025

On Large Language Model Continual Unlearning

ICLR 2025poster

While large language models have demonstrated impressive performance across various domains and tasks, their security issues have become increasingly severe. Machine unlearning has emerged as a representative approach for model safety and security by removing the influence of undesired data on the t…

2025

Shallow Flow Matching for Coarse-to-Fine Text-to-Speech Synthesis

NeurIPS 2025poster

We propose Shallow Flow Matching (SFM), a novel mechanism that enhances flow matching (FM)-based text-to-speech (TTS) models within a coarse-to-fine generation paradigm. Unlike conventional FM modules, which use the coarse representations from the weak generator as conditions, SFM constructs interme…

Cited by 0SourcecodeScholar
2025

Split Adaptation for Pre-trained Vision Transformers

CVPR 2025poster

Vision Transformers (ViTs), extensively pre-trained on large-scale datasets, have become fundamental to foundation models, enabling adaptation to diverse downstream tasks. Existing adaptation methods typically require direct data access, rendering them infeasible in privacy-sensitive domains where c…

2024

DACR: Distribution-Augmented Contrastive Reconstruction for Time-Series Anomaly Detection

ICASSP 2024accepted

Anomaly detection in time-series data is crucial for identifying faults, failures, threats, and outliers across a range of applications. Recently, deep learning techniques have been applied to this topic, but they often struggle in real-world scenarios that are complex and highly dynamic, e.g., the…

Cited by 0SourceScholar
2023

Deja Vu: Continual Model Generalization for Unseen Domains

ICLR 2023poster

In real-world applications, deep learning models often run in non-stationary environments where the target data distribution continually shifts over time. There have been numerous domain adaptation (DA) methods in both online and offline modes to improve cross-domain adaptation ability. However, the…

Cited by 27SourcePDFScholar
2023

Domain Watermark: Effective and Harmless Dataset Copyright Protection is Closed at Hand

NeurIPS 2023poster

The prosperity of deep neural networks (DNNs) is largely benefited from open-source datasets, based on which users can evaluate and improve their methods. In this paper, we revisit backdoor-based dataset ownership verification (DOV), which is currently the only feasible approach to protect the copyr…

2023

PolicyCleanse: Backdoor Detection and Mitigation for Competitive Reinforcement Learning

ICCV 2023poster

While real-world applications of reinforcement learning (RL) are becoming popular, the security and robustness of RL systems are worthy of more attention and exploration. In particular, recent works have revealed that, in a multi-agent RL environment, backdoor trigger actions can be injected into a…

Cited by 20PDFScholar
2022

Non-Transferable Learning: A New Approach for Model Ownership Verification and Applicability Authorization

ICLR 2022oral

As Artificial Intelligence as a Service gains popularity, protecting well-trained models as intellectual property is becoming increasingly important. There are two common types of protection methods: ownership verification and usage authorization. In this paper, we propose Non-Transferable Learning…

2021

Weak Adaptation Learning: Addressing Cross-Domain Data Insufficiency With Weak Annotator

ICCV 2021poster

Data quantity and quality are crucial factors for data-driven learning methods. In some target problem domains, there are not many data samples available, which could significantly hinder the learning process. While data from similar domains may be leveraged to help through domain adaptation, obtain…

Cited by 18PDFScholar