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Zhihui Liu

4 accepted papers

2026

ARDiff: Anisotropic Residual Diffusion for Heterogeneous Graph Learning

AAAI 2026technical

Learning representations on graphs is foundational for many downstream tasks, and its synergy with diffusion models has emerged as a promising direction. However, diffusion-based methods for heterogeneous graphs remain underexplored, confronting two principal challenges: (1) The presence of noise an

Cited by 0SourcePDFScholar
2026

COPE: Consistent Occlusion and Prompt Enhancement Network for Occluded Person Re-identification

CVPR 2026

Occlusion presents two critical challenges for person re-identification (Re-ID): feature interference and information loss. While existing efforts have explored occlusion-aware data augmentation and feature reconstruction to mitigate these issues, the former often fails to address erroneous matches

Cited by 0SourcecodeScholar
2026

PPM-CLIP: Probabilistic Prompt Modeling for Generalizable AI-Generated Image Detection

CVPR 2026

The rapid rise of highly realistic AI-generated images necessitates reliable and generalizable detection methods. However, existing methods are constrained by their discriminative nature: by learning a single static decision boundary, they tend to memorize generator-specific artifacts and consequent

Cited by 0SourceScholar
2024

Towards More Realistic Chinese Spell Checking with New Benchmark and Specialized Expert Model

COLING 2024main

Large Language Models (LLMs) hold considerable promise for artificial general intelligence, given their intrinsic abilities to accomplish a wide range of open-domain tasks either independently or in tandem with specialized expert models. However, despite these capabilities, the performance of LLMs h…