exp2d {tgp} | R Documentation |
A 2-dimensional data set that can be used to validate non-stationary models.
data(exp2d)
A data frame
with 441 observations on the following 4 variables.
X1
X
inputsX2
X
inputsZ
Z(X)+N(0,sd=0.001)
Ztrue
Z(X)
,
without noiseThe response is evaluated as
Z(X) = X1 * exp(-X1^2 -X2^2).
Zero-mean normal noise
with sd=0.001
has been added to the response
This data is used in the examples of the functions listed below in
the “See Also” section via the exp2d.rand
function
Robert B. Gramacy rbgramacy@ams.ucsc.edu
Gramacy, R. B., Lee, H. K. H. (2006). Bayesian treed Gaussian process models. Available as UCSC Technical Report ams2006-01.
http://www.ams.ucsc.edu/~rbgramacy/tgp.html
exp2d.rand
, exp2d.Z
, tgp
,
btgp
, and other b*
functions