Author

Zhanliang Wang

University of Pennsylvania

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Preprint Oct 2026

Synthetic Image Oversampling for Rare-Class Representation Learning in Deep Facial Phenotyping

Recent deep facial phenotyping methods can support the recognition of genetic syndromes, but patient images are often scarce and unevenly distributed across disorders. Synthetic facial images offer a way to supplement the training data without collecting additional patient photographs. Their usefulness, however, depend...

Miles Liao, Zhanliang Wang, Hong-Zhuo Chen et al. · 0 citations

Preprint Oct 2026

FaceKit: a Toolkit for Interpretable Facial Phenotyping, Synthetic Image Generation and Privacy Analysis in Rare Diseases

Many rare genetic diseases are associated with recognizable craniofacial features. However, traditional approaches for describing facial morphology rely largely on qualitative clinical observation and free-text descriptions, which are often subjective, non-standardized, and difficult to reproduce across observers and i...

Hong-Zhuo Chen, Zhanliang Wang, Florent Pollet et al. · 0 citations

Preprint Aug 2026

Beyond Post-Hoc Temperature Scaling: Bilevel Optimization for LLM Calibration

This work proposes maximizing the entropy of predictive distributions as the calibration objective, which directly targets overconfidence by discouraging overly concentrated predictions, and adopts an efficient first-order approximation that avoids explicit second-order computation.

Ruochen Jin, Zhanliang Wang, Zong-Yu Dai et al. · 0 citations