activity
20242026
collaborators

5 papers

cs.CV2026

MAVISEG: Manifold Propagation and Visual Prototypes for Zero-Shot Open-Vocabulary Segmentation in Diffusion Transformers

Rajatsubhra Chakraborty, Xujun Che, Ritabrata Chakraborty +2

Text-to-image diffusion transformers learn about objects and scenes by learning to generate them, making them strong candidates for training-free zero-shot open-vocabulary semantic…

cs.LG2026

StraightDP: Geometry-Aware Differential Privacy for Rectified-Flow Transformers

Xujun Che, Depeng Xu, Xintao Wu

Differentially private (DP) training of text-conditioned generative models suffers a utility cliff at strong privacy. We revisit this problem through the geometry of rectified flow…

cs.LG2026

Unlocking High-Fidelity Molecular Generation from Mass Spectra via Dual-Stream Line Graph Diffusion

Xujun Che, Xiuxia Du, Depeng Xu

De novo molecular generation from tandem mass spectra is a challenging inverse problem whose core difficulty lies in the circular dependency between atom-level and bond-level reaso…

cs.CV2025

BiasMap: Leveraging Cross-Attentions to Discover and Mitigate Hidden Social Biases in Text-to-Image Generation

Rajatsubhra Chakraborty, Xujun Che, Depeng Xu +3

Bias discovery is critical for black-box generative models, especiall text-to-image (TTI) models. Existing works predominantly focus on output-level demographic distributions, whic…

cs.CV2024

BadSAD: Clean-Label Backdoor Attacks against Deep Semi-Supervised Anomaly Detection

He Cheng, Depeng Xu, Shuhan Yuan

Image anomaly detection (IAD) is essential in applications such as industrial inspection, medical imaging, and security. Despite the progress achieved with deep learning models lik…