Yi-Zhe Wang

From Behavior to Geometry: A Causal and Geometric Analysis of LoRA-Based Domain Adaptation

Cultural bias or universal traits? Exploring personality-like profiles of large language models

Do large language models (LLMs) exhibit coherent personality profiles, and are these profiles culturally neutral? This study used two validated personality inventories, the Big Five Inventory–2 and the Dark Triad Dirty Dozen, to assess five state-of-the-art LLMs (ChatGPT-4o, Gemini 2.0 Flash, DeepSeek-V3, Ernie 3.5 a...

Disentangling Acoustic Cues in Alzheimer's Pathology and Perception: The Roles of Language and Gender

Acoustic biomarkers show promise for detecting Alzheimer's Disease (AD), yet whether the cues driving diagnostic AI align with those salient to human listeners is underexplored across languages and genders, where pathological markers and perceptual strategies differ. We train models to predict clinical AD status (patho...