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Ziyu Chen

14 accepted papers

2026

CurvZO: Adaptive Curvature-Guided Sparse Zeroth-Order Optimization for Efficient LLM Fine-Tuning

ICML 2026poster

Fine-tuning large language models (LLMs) with backpropagation achieves high performance but incurs substantial memory overhead, limiting scalability on resource-constrained hardware. Zeroth-order (ZO) optimization provides a memory-efficient alternative by relying solely on forward passes, yet it ty…

Cited by 0SourceScholar
2026

Detecting AI-Generated Forgeries via Iterative Manifold Deviation Amplification

CVPR 2026

The proliferation of highly realistic AI-generated images poses critical challenges for digital forensics, demanding precise pixel-level localization of manipulated regions. Existing methods predominantly learn discriminative patterns of specific forgeries, struggling with novel manipulations as edi

Cited by 0SourceScholar
2026

LR-SGS: Robust LiDAR-Reflectance-Guided Salient Gaussian Splatting for Self-Driving Scene Reconstruction

ICRA 2026poster

Recent 3D Gaussian Splatting (3DGS) methods have demonstrated the feasibility of self-driving scenes reconstruction and novel view synthesis. However, most existing methods either rely solely on cameras or use LiDAR only for Gaussian initialization or depth supervision, while the rich scene informat…

2025

FGO-SLAM: Enhancing Gaussian SLAM with Globally Consistent Opacity Radiance Field

ICRA 2025

Visual SLAM has regained attention due to its ability to provide perceptual capabilities and simulation test data for Embodied AI. However, traditional SLAM methods struggle to meet the demands of high-quality scene reconstruction, and Gaussian SLAM systems, despite their rapid rendering and high-qu

Cited by 5SourceScholar
2025

MoVa: Towards Generalizable Classification of Human Morals and Values

EMNLP 2025

Identifying human morals and values embedded in language is essential to empirical studies of communication. However, researchers often face substantial difficulty navigating the diversity of theoretical frameworks and data available for their analysis. Here, we contribute MoVa, a well-documented su

2025

OmniRe: Omni Urban Scene Reconstruction

ICLR 2025spotlight

We introduce OmniRe, a comprehensive system for efficiently creating high-fidelity digital twins of dynamic real-world scenes from on-device logs. Recent methods using neural fields or Gaussian Splatting primarily focus on vehicles, hindering a holistic framework for all dynamic foregrounds demanded…

2024

CMGFA: A BEV Segmentation Model Based on Cross-Modal Group-Mix Attention Feature Aggregator

RA-L 2024

Bird's eye view (BEV) segmentation map is a recent development in autonomous driving that provides effective environmental information, such as drivable areas and lane dividers. Most of the existing methods use cameras and LiDAR as inputs for segmentation and the fusion of different modalities is ac

Cited by 2SourceScholar
2023

Mosaic Representation Learning for Self-supervised Visual Pre-training

ICLR 2023top-25%

Self-supervised learning has achieved significant success in learning visual representations without the need for manual annotation. To obtain generalizable representations, a meticulously designed data augmentation strategy is one of the most crucial parts. Recently, multi-crop strategies utilizing…

2023

Sample Complexity of Probability Divergences under Group Symmetry

ICML 2023poster

We rigorously quantify the improvement in the sample complexity of variational divergence estimations for group-invariant distributions. In the cases of the Wasserstein-1 metric and the Lipschitz-regularized $\alpha$-divergences, the reduction of sample complexity is proportional to an ambient-dimen…

Cited by 14SourcePDFScholar
2022

L-Tracing: Fast Light Visibility Estimation on Neural Surfaces by Sphere Tracing

ECCV 2022poster

"We introduce a highly efficient light visibility estimation method, called L-Tracing, for reflectance factorization on neural implicit surfaces. Light visibility is indispensable for modeling shadows and specular of high quality on object’s surface. For neural implicit representations, former metho…

Cited by 11SourcePDFScholar
2022

Representation-Agnostic Shape Fields

ICLR 2022poster

3D shape analysis has been widely explored in the era of deep learning. Numerous models have been developed for various 3D data representation formats, e.g., MeshCNN for meshes, PointNet for point clouds and VoxNet for voxels. In this study, we present Representation-Agnostic Shape Fields (RASF), a…