infillExpectedImprovement: Negative Logarithm of Expected Improvement
Description
This function calculates the Expected Improvement" of candidate solutions,
based on predicted means, standard deviations (uncertainty) and
the best known objective function value so far.
Usage
infillExpectedImprovement(mean, sd, min)
Arguments
mean
predicted mean values
sd
predicted standard deviation
min
minimum of all observations so far
Value
Returns the negative logarithm of the Expected Improvement.