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Conference Paper

Incremental Gaussian Processes

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons83845

Quinonero Candela,  J
Department Empirical Inference, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Quinonero Candela, J. (2003). Incremental Gaussian Processes. Advances in Neural Information Processing Systems 15, 1001-1008.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-DB41-7
Abstract
In this paper, we consider Tipping‘s relevance vector machine (RVM) and formalize an incremental training strategy as a variant of the expectation-maximization (EM) algorithm that we call subspace EM. Working with a subset of active basis functions, the sparsity of the RVM solution will ensure that the number of basis functions and thereby the computational complexity is kept low. We also introduce a mean field approach to the intractable classification model that is expected to give a very good approximation to exact Bayesian inference and contains the Laplace approximation as a special case. We test the algorithms on two large data sets with O(10^3-10^4) examples. The results indicate that Bayesian learning of large data sets, e.g. the MNIST database is realistic.