Title
Gradient Descent for Gaussian Processes Variance Reduction.
Abstract
A key issue in Gaussian Process modeling is to decide on the locations where measurements are going to be taken. A good set of observations will provide a better model. Current state of the art selects such a set so as to minimize the posterior variance of the Gaussian Process by exploiting submodularity. We propose a Gradient Descent procedure to iteratively improve an initial set of observations so as to minimize the posterior variance directly. The performance of the technique is analyzed under different conditions by varying the number of measurement points, the dimensionality of the domain and the hyperparameters of the Gaussian Process. Results show the applicability of the technique and the clear improvements that can be obtain under different settings.
Year
DOI
Venue
2018
10.1007/978-3-319-97785-0_16
Lecture Notes in Computer Science
DocType
Volume
ISSN
Conference
11004
0302-9743
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Lorenzo Bottarelli192.71
Marco Loog21796154.31