3.6.2. OAT design in Uranie

In Uranie, each factor of the OAT design takes at least three values: a nominal value, a lower value (smaller than the nominal one) and an upper value (greater than the nominal one). When a factor is not “modified” it is set to its nominal value. This leads to a design of \(2n+1\) experiments, where \(n\) is the number of factors, and “\(+1\)” refers to a reference experiment, where no factor is modified.

Two classes can produce OAT designs:

• TOATSampling: simple, but limited in its functionality. It is used by some classes of Uranie.

• TOATDesign: an improved version of the previous one, more user oriented.

As TOATSampling will become deprecated in a future version of Uranie the present document will focus on the usage of TOATDesign.