The performance of step-wise group screening designs

الملخص EN

In this paper we evaluate the performance of step-wise group screening designs in which group-factors contain an equal number of factors in the initial step.

A Usual assumption in group screening designs is that the directions of possible effects are known a-priori.

In practice, however, this assumption is unreasonable.

We shall examine step-wise group screening designs without errors in observations when this assumption is relaxed.

We shall consider cancellations of effects within group-factors.

The performance of step-wise group-screening designs shall then be compared with the performance of multistage group screening designs.