Raymond H . Myers, Douglas C . Montgomery, Christine M . Anderson-Cook, Response Surface Methodology : Process and Product Optimization Using Designed Experiments, John Wiley & Sons Inc; 3 edition ( January 14, 2009 ).
22.
Nonetheless, response surface methodology has an effective track-record of helping researchers improve products and services : For example, Box's original response-surface modeling enabled chemical engineers to improve a process that had been stuck at a saddle-point for years.
23.
One way of alleviating this burden is by constructing approximation models, known as "'surrogate models "', response surface models, " metamodels " or " emulators ", that mimic the behavior of the simulation model as closely as possible while being computationally cheap ( er ) to evaluate.
24.
Response surface models of current-year needles net photosynthesis ( P n ) response to vapour pressure deficit ( VPD ) and photosynthetically active radiation ( PAR ) showed that emblings had 15 % greater P n at VPD of less than 3.0 kPa and PAR greater than 1000 ?mol m " 2 s " 1.
