← Search

Hongwei Zheng

6 accepted papers

2026

Lyapunov Probes for Hallucination Detection in Large Foundation Models

CVPR 2026

We address hallucination detection in Large Language Models (LLMs) and Multimodal Large Language Models (MLLMs) by framing the problem through the lens of dynamical systems stability theory. Rather than treating hallucination as a straightforward classification task, we conceptualize (M)LLMs as dyna

Cited by 0SourceScholar
2026

Z-Erase: Enabling Concept Erasure in Single Stream Diffusion Transformers

ICML 2026poster

Concept erasure serves as a vital safety mechanism for removing unwanted concepts from text-to-image (T2I) models. While extensively studied in U-Net and dual-stream architectures (e.g., Flux), this task remains under-explored in the recent emerging paradigm of single-stream diffusion transformers (…

Cited by 0SourceScholar
2025

HiPART: Hierarchical Pose AutoRegressive Transformer for Occluded 3D Human Pose Estimation

CVPR 2025poster

Existing 2D-to-3D human pose estimation (HPE) methods struggle with the occlusion issue by enriching information like temporal and visual cues in the lifting stage. In this paper, we argue that these methods ignore the limitation of the sparse skeleton 2D input representation, which fundamentally re…

Cited by 1SourcePDFScholar
2025

MaFeRw: Query Rewriting with Multi-Aspect Feedbacks for Retrieval-Augmented Large Language Models

AAAI 2025technical

In a real-world RAG system, the current query often involves spoken ellipses and ambiguous references from dialogue contexts, necessitating query rewriting to better describe user's information needs. However, traditional context-based rewriting has minimal enhancement on downstream generation tasks…

2024

BEM: Balanced and Entropy-based Mix for Long-Tailed Semi-Supervised Learning

CVPR 2024poster

Data mixing methods play a crucial role in semi-supervised learning (SSL) but their application is unexplored in long-tailed semi-supervised learning (LTSSL). The primary reason is that the in-batch mixing manner fails to address class imbalance. Furthermore existing LTSSL methods mainly focus on re…

Cited by 7SourcePDFScholar
2023

Pose-Oriented Transformer with Uncertainty-Guided Refinement for 2D-to-3D Human Pose Estimation

AAAI 2023technical

There has been a recent surge of interest in introducing transformers to 3D human pose estimation (HPE) due to their powerful capabilities in modeling long-term dependencies. However, existing transformer-based methods treat body joints as equally important inputs and ignore the prior knowledge of h…

Cited by 51SourcePDFScholar