New boosting methods of Gaussian processes for regression

摘要

Feedforward neural networks are popular tools for nonlinear regression and classification problems. Gaussian Process (GP) can be viewed as an RBF neural network which have infinite number of hidden neurons. On regression problems, they can predict both the mean value and the variance of the given sample. Boosting is one of the most important recent developments in machine learning. Classification problems have dominated research on boosting to date. On the other hand, the application of boosting of regression has received less investigation. In this paper, we develop two boosting methods of GPs for regression according to the characteristic of them. We compare the performance of our ensembles with other boosting algorithms and find that our methods are more stable and essentially have less over-fitting problems than the other methods.