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Shiji Zhou

12 accepted papers

2025

Dual-Process Watermarked Diffusion: Integrating Watermarking With Denoising in Point Clouds

ICASSP 2025accepted

The integration of depth sensing and laser scanning technologies has propelled point cloud data to the forefront of 3D graphical modeling. This paper addresses a critical gap in the literature: the protection of intellectual property in generating point clouds using Diffusion Models (DMs). We introd…

Cited by 0SourceScholar
2025

Efficient Utility-Preserving Machine Unlearning with Implicit Gradient Surgery

NeurIPS 2025poster

Machine unlearning (MU) aims to efficiently remove sensitive or harmful memory from a pre-trained model. The key challenge is to balance the potential tradeoff between unlearning efficacy and utility preservation, which involves forgetting undesirable information as defined while maintaining the mod…

Cited by 0SourcecodeScholar
2025

Implanting Robust Watermarks in Latent Diffusion Models for Video Generation

ICASSP 2025accepted

In the dynamic realm of digital media, latent diffusion models (LDM) have revolutionized the generation of videos, surpassing the capabilities of traditional generative models. This paper presents Stable Video Signature, a pioneering watermarking framework for LDM in video generation. Addressing the…

Cited by 0SourceScholar
2025

Unlearning Concepts in Diffusion Model via Concept Domain Correction and Concept Preserving Gradient

AAAI 2025technical

Text-to-image diffusion models have achieved remarkable success in generating photorealistic images. However, the inclusion of sensitive information during pre-training poses significant risks. Machine Unlearning (MU) offers a promising solution to eliminate sensitive concepts from these models. Des…

2024

Gradient-based Parameter Selection for Efficient Fine-Tuning

CVPR 2024poster

With the growing size of pre-trained models full fine-tuning and storing all the parameters for various downstream tasks is costly and infeasible. In this paper we propose a new parameter-efficient fine-tuning method Gradient-based Parameter Selection (GPS) demonstrating that only tuning a few selec…

2024

Robust Multi-Task Learning with Excess Risks

ICML 2024poster

Multi-task learning (MTL) considers learning a joint model for multiple tasks by optimizing a convex combination of all task losses. To solve the optimization problem, existing methods use an adaptive weight updating scheme, where task weights are dynamically adjusted based on their respective losse…

2023

Improving Generalization of Meta-Learning With Inverted Regularization at Inner-Level

CVPR 2023poster

Despite the broad interest in meta-learning, the generalization problem remains one of the significant challenges in this field. Existing works focus on meta-generalization to unseen tasks at the meta-level by regularizing the meta-loss, while ignoring that adapted models may not generalize to the t…

Cited by 17SourcePDFScholar
2023

Joint Geometrical and Statistical Domain Adaptation for Cross-domain Code Vulnerability Detection

EMNLP 2023long main

In code vulnerability detection tasks, a detector trained on a label-rich source domain fails to provide accurate prediction on new or unseen target domains due to the lack of labeled training data on target domains. Previous studies mainly utilize domain adaptation to perform cross-domain vulnerabi…

Cited by 0SourceScholar
2022

On the Convergence of Stochastic Multi-Objective Gradient Manipulation and Beyond

NeurIPS 2022accept

The conflicting gradients problem is one of the major bottlenecks for the effective training of machine learning models that deal with multiple objectives. To resolve this problem, various gradient manipulation techniques, such as PCGrad, MGDA, and CAGrad, have been developed, which directly alter t…

Cited by 53SourcePDFScholar
2022

Online Continual Adaptation with Active Self-Training

AISTATS 2022poster

Models trained with offline data often suffer from continual distribution shifts and expensive labeling in changing environments. This calls for a new online learning paradigm where the learner can continually adapt to changing environments with limited labels. In this paper, we propose a new online…

Cited by 13SourcePDFScholar
2021

Not All Low-Pass Filters are Robust in Graph Convolutional Networks

NeurIPS 2021poster

Graph Convolutional Networks (GCNs) are promising deep learning approaches in learning representations for graph-structured data. Despite the proliferation of such methods, it is well known that they are vulnerable to carefully crafted adversarial attacks on the graph structure. In this paper, we fi…