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Indicator function and complex coding for mixed fractional factorial designs

Giovanni Pistone·Maria Piera Rogantin
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Abstract

In a general fractional factorial design, the $n$-levels of a factor are coded by the $n$-th roots of the unity. This device allows a full generalization to mixed-level designs of the theory of the polynomial indicator function which has already been introduced for two level designs by Fontana and the Authors (2000). the properties of orthogonal arrays and regular fractions are discussed.

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Giovanni Pistone, Maria Piera Rogantin. 2007-03-13. Indicator function and complex coding for mixed fractional factorial designs. https://arxiv.org/abs/math/0703365

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