Flexible and efficient Gaussian process models
published: Feb. 25, 2007, recorded: June 2006, views: 4835
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I will briefly describe our work on the sparse pseudo-input Gaussian process (SPGP), where we refine the sparse approximation by selecting `pseudo-inputs' using gradient methods. I will then describe several extensions to this framework. Firstly we incorporate supervised dimensionality reduction to deal with high dimensional input spaces. Secondly we develop a version of the SPGP that can handle input-dependent noise. These extensions allow GP methods to be applied to a wider variety of modelling tasks than previously possible.
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