关键词: 正规部分因子设计, 字长型, 最优折叠反转, 类型为0的最小混杂准则

Abstract:

In this paper,  the authors  study the issue of foldover of regular (s^r)×sⁿ fractional factorial designs,  where r~(≥2) is an integer and s is a prime or prime power.  A general decomposition structure of the foldover plan for a regular (s^r)×sⁿ fractional factorial design is obtained.  The relationship between an initial design and its combined design are studied. This is done both for  with and without consideration of the blocking factor. So the authors generalize the results about foldover from sⁿ regular fractional factorial designs to the case of (s^r)×sⁿ regular fractional.

Key words: Minimum aberration criterion of type 0, Optimal foldover, Regular fractional factorial design,  Word length pattern