@article{amp2020814,
author={{Wambui, Njoroge Elizabeth and Joseph, Koske and John, Mutiso},
title={D- and G- Optimal Axial Slope Designs for Four Ingredient Mixture},
journal={Applied Mathematics and Physics},
volume={8},
number={1},
pages={20--25},
year={2020},
url={http://pubs.sciepub.com/amp/8/1/4},
issn={2333-4886},
abstract={This paper aims at investigating and comparing the D- and G-optimal criteria for non-pure blends slope designs. The study used a parameter subsystem of interest based on the second-degree Kronecker model to obtain the H-invariant information matrices for both Equally Weighted Simplex Centroid Axial Design and Un-equally Weighted Simplex Centroid Axial Design. The D- and G- optimal values worked out revealed that the centroid achieved the best D- and G-optimality values and that the best D-efficient and G-efficient design points were <img src=image/abs1.png></img> with 105.71% and <img src=image/abs2.png></img> 99.76% respectively. The latter design was more D-efficient while former design was more G-efficient.},
doi={10.12691/amp-8-1-4}
publisher={Science and Education Publishing}
}