実験計画（DOE）には、最適計画を探すためにどのくらいの時間を割り当てるかを制御するNumber of Startsや
Design Search Timeなどのオプションが用意されています。
DOE(
Custom Design,
Add Factor( Continuous, -1, 1, "X1", 0 ),
Add Factor( Continuous, -1, 1, "X2", 0 ),
Add Factor( Continuous, -1, 1, "X3", 0 ),
Number of Starts( 1000 ),
Make Design
);
d = DOE( Screening Design );
dt2 = Open( "$SAMPLE_DATA/Design Experiment/Weld Factors.jmp" );
d << Load Factors;
Close( dt2 );
d << {Set Random Seed( 12345 ), Screening Type( 1 ),
Suppress Cotter Designs, Design Search Time( 8 ),
Number of Column Starts( 50 ), Set Sample Size( 12 ), Make Design};