PhipMeasure function

Phi_p criterion

For a given design Phi_p criterion (Morris and Mitchell, 1995) is calculated using this function. Lesser the value of Phi_p criterion better the design in terms of space-filling.

PhipMeasure(design,p=15,q=1)

Arguments

• design: A design matrix is needed
• p: Any positive integer. Default value of p = 15.
• q: Any positive integer. Default value of q = 1. This implies that we are considering here Euclidean distance.

Returns

Generates Phi_p criterion value

References

Morris, M.D. and Mitchell, T.J. (1995). Exploratory designs for computer experiments. Journal of Statistical Planning and Inference, 43, 38-402.

Author(s)

Ashutosh Dalal, Cini Varghese, Rajender Parsad and Mohd Harun

Examples

library(CompExpDes)
lhd<-matrix(c(1,5,7,3,4,2,6,2,1,4,5,3,7,6,4,5,6,1,2,3,7),nrow=7,ncol=3,byrow=FALSE)
PhipMeasure(lhd,p=15,q=2)