An Introduction to Non-parametric Bayesian Methods
- đ¤ Speaker: Professor Zoubin Ghahramani, University of Cambridge
- đ Date & Time: Thursday 22 February 2007, 16:00 - 18:00
- đ Venue: LR5, Engineering, Department of
Abstract
Bayesian methods provide a sound statistical framework for modelling and decision making. However, most simple parametric models are not realistic for modelling real-world data. Non-parametric models are much more flexible and therefore are much more likely to capture our beliefs about the data. They also often result in better predictive performance.
I will give a survey/tutorial of the field of non-parametric Bayesian statistics from the perspective of machine learning (a slightly revised version of my tutorial at the 2005 UAI Conference). Topics will include:
- The need for non-parametric models
- A very brief review of Gaussian processes
- Chinese restaurant processes, different constructions, Pitman-Yor processes
- Dirichlet processes, Dirichlet process mixtures
- Polya trees
- Dirichlet diffusion trees
- Time permitting, some new work on Indian buffet processes
Series This talk is part of the Machine Learning @ CUED series.
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Thursday 22 February 2007, 16:00-18:00