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| Seminar Schedule (Seminar Organizer: Prof. Ziv Bar-Joseph) | |
Machine Learning Lunch Seminar
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Spring 2008 Seminar
Date: April 10, 2008 Time: 12:00 PM - 1:00 PM Location: 5409 Wean Hall Speaker: Jingrui He PhD Candidate Title: Graph-Based Semi-Supervised Learning as a Generative Model Abstract: Graph-based semi-supervised learning has been very active in recent years. In this talk, we propose a new graph-based semi-supervised learning method. Different from previous graph-based methods that are based on discriminative models, our method is essentially a generative model in that the class conditional probabilities are estimated by graph propagation and the class priors are estimated using both the labeled and the unlabeled data. Experimental results on various datasets show that the proposed method is superior to existing graph-based semi-supervised learning methods, especially when the labeled subset alone proves insufficient to estimate meaningful class priors.
