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FIELD
AI and Natural Sciences
DATE
Mar 20 (Wed), 2024
TIME
10:00 ~ 12:00
PLACE
ONLINE
SPEAKER
Tian Han
HOST
Yoon, Sangwoong
INSTITUTE
stevens insttitute of technology
TITLE
Towards Expressive Hierarchical Generative Models
ABSTRACT
Hierarchical generative modeling is of vital importance in a wide range of real-world applications as it can provide realistic content generation as well as compact multi-layer data representations. However, prevailing hierarchical learning approaches have proven inadequate,characterized by limited modeling of contextual dependencies in a hierarchical latent space and ineffective learning of complex latent structures. In this talk, I will present new hierarchical generative frameworks, enhanced by the context-aware latent space energy-based models, that could surpass the current capacity of generative modeling. The proposed frameworks seamlessly integrate two key families of probabilistic models: one being the top-down generative model (for hierarchical structural modeling), and the other being the bottom-up energy-based model (for latent contextual modeling). Such frameworks have enhanced model expressivity in generating high-quality images and capturing meaningful hierarchical representations.
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