基于FDS准则的响应曲面设计预测能力比较OACHSSCDCSTPCD

Prediction ability is an important criterion for practical application workers to evaluate the quality of a design.In general,the design prediction ability of a fixed sphere can be compared and selected by means of the variogram,but the compari-son results on the whole design area cannot be obtained.This paper first introduces response surface design(OACD)based on or-thogonal array and the modified design based on minimax criterion(OACM),and then compares the prediction ability between these two kinds of central combined designs by using the whole region prediction variance ratio criterion—FDS criterion.The re-sults show that in a small variance range,the FDS obtained by OACD is better than that of OACM,but for most given variance values,the FDS of OACM is better than that of OACD.