Paper Info
Title
Deep Gaussian Processes with Convolutional Kernels.
Abstract
Deep Gaussian processes (DGPs) provide a Bayesian non-parametric alternative to standard parametric deep learning models. A DGP is formed by stacking multiple GPs resulting in a well-regularized composition of functions. The Bayesian framework that equips the model with attractive properties, such as implicit capacity control and predictive uncertainty, makes it at the same time challenging to combine with a convolutional structure. This has hindered the application of DGPs in computer vision tasks, an area where deep parametric models (i.e. CNNs) have made breakthroughs. Standard kernels used in DGPs such as radial basis functions (RBFs) are insufficient for handling pixel variability in raw images. In this paper, we build on the recent convolutional GP to develop Convolutional DGP (CDGP) models which effectively capture image level features through the use of convolution kernels, therefore opening up the way for applying DGPs to computer vision tasks. Our model learns local spatial influence and outperforms strong GP based baselines on multi-class image classification. We also consider various constructions of convolution kernel over the image patches, analyze the computational trade-offs and provide an efficient framework for convolutional DGP models. The experimental results on image data such as MNIST, rectangles-image, CIFAR10 and Caltech101 demonstrate the effectiveness of the proposed approaches.
Year
Venue
Field
2018
arXiv: Machine Learning
Parametric model,MNIST database,Pattern recognition,Convolution,Parametric statistics,Gaussian process,Artificial intelligence,Deep learning,Contextual image classification,Kernel (image processing),Machine learning,Mathematics
DocType
Volume
Citations 
Journal
abs/1806.01655
4
PageRank 
References 
Authors
0.46
11
4
Name
Order
Citations
PageRank
Vinayak Kumar141.13
Vaibhav Singh2101.34
P. K. Srijith3636.33
andreas damianou415117.68