SPOT (version 2.11.10)

funGulf: funGulf (No.17, More No. 11)

Description

3-dim Gulf research and development Test Function

Usage

funGulf(x, m = 99)

Arguments

x

matrix (n x 3) of points to evaluate with the function. Rows for points and columns for dimension. Values should be larger than 0.

m

additional parameter: . The Gulf function supports an additional parameter m in the range from 3 to 100

Value

1-column matrix with resulting function values

References

More, J. J., Garbow, B. S., and Hillstrom, K. E. (1981). Testing unconstrained optimization software. ACM Transactions on Mathematical Software (TOMS), 7(1), 17-41. 10.1145/355934.355936

Examples

# NOT RUN {
x1 <- matrix(c(50,25,1.5),1,)
funGulf(x1)

funGulf(x1,m=50)

resGulf <- spot(,funGulf,c(0,0,0),c(100,50,5))
resGulf$xbest
resGulf$ybest
plotModel(resGulf$model, which=1:2)
plotModel(resGulf$model, which=2:3)

# x0 is an optional start point (or set of start points), specified as a matrix.
# One row for each point, and one column for each optimized parameter.
x0 = matrix(c(5,2.5,0.15),1,3)
resGulf <- spot(x0,funGulf,c(0,0,0),c(100,50,5))
resGulf$xbest
resGulf$ybest

# }