Liang Zheng

Hierarchical Image Classification with A Literally Toy Dataset

2021 · arXiv (Cornell University)

Unsupervised domain adaptation (UDA) in image classification remains a big challenge. In existing UDA image dataset, classes are usually organized in a flattened way, where a plain classifier can be trained. Yet in some scenarios, …

Privacy Assessment on Reconstructed Images: Are Existing Evaluation Metrics Faithful to Human Perception?

2023 · arXiv (Cornell University)

Hand-crafted image quality metrics, such as PSNR and SSIM, are commonly used to evaluate model privacy risk under reconstruction attacks. Under these metrics, reconstructed images that are determined to resemble the original one generally indicate …

Context-Dependent Anomaly Action Recognition

2025

We explore the problem of unsupervised anomaly action recognition, focusing on identifying abnormal human behavior that takes into account the surrounding context. Unlike conventional approaches that rely solely on observing the human action, we recognize …