SPOT (version 2.11.10)

funBrownBs: funbrownBs (No. 10, More No. 4)

Description

2-dim Brown badly scaled Test Function

Usage

funBrownBs(x)

Arguments

x

matrix of points to evaluate with the function. Rows for points and columns for dimension.

Value

1-column matrix with resulting function values

Details

n=2, m=3 x0 = (1,1) f=0 at (1e6, 2e-6)

References

More, J. J., Garbow, B. S., and Hillstrom, K. E. (1981). Testing unconstrained optimization software. https://www.osti.gov/servlets/purl/6650344

Examples

# NOT RUN {
x1 <- matrix(c(1,1),1,)
funBrownBs(x1)

res <- spot(,fun=funBrownBs,c(-10,-10),c(10,10),control=list(funEvals=20))
plotModel(res$model, points = rbind(c(res$xbest[1], res$xbest[2]),c(1.098e-5,9.106)))

# }