A 5-dimensional test function.
friedman.5.data(x)a 5-dimensional vector specifying the location where the function is to be evaluated.
A real value equal to the function value evaluated at x.
For more details see Friedman, J. H. (1991). Multivariate adaptive regression splines. The annals of statistics, 19(1), 1-67.
Friedman, J. H. (1991). Multivariate adaptive regression splines. The annals of statistics, 19(1), 1-67.
S. Surjanovic, D. Bingham, Virtual Library of Simulation Experiments: Test Functions and Datasets, retrieved March 29, 2016, from http://www.sfu.ca/~ssurjano/fried.html.