BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Modelling discontinuities in simulator output using Voronoi tessel
 lations - John Paul  Gosling  (University of Leeds)
DTSTART:20180206T133000Z
DTEND:20180206T143000Z
UID:TALK99940@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:<span>Co-authors: Chris Pope		(University of Leeds)\, Jill Joh
 nson		(University of Leeds)\, Stuart Barber		(University of Leeds)\, Paul 
 Blackwell		(University of Sheffield)        <br></span><span><br>Computati
 onally expensive\, complex computer programs are often used to model and p
 redict real-world phenomena. The standard Gaussian process model has a dra
 wback in that the computer code output is assumed to be homogeneous over t
 he input space. Computer codes can behave very differently in various regi
 ons of the input space. Here\, we introduce a piecewise Gaussian process m
 odel to deal with this problem where the input space is divided into separ
 ate regions using Voronoi tessellations (also known as Dirichlet tessellat
 ions\, Thiessen polygons or the dual of the Delaunay triangulation). We de
 monstrate our method&rsquo\;s utility with an application in climate scien
 ce.</span>
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR