Augmenting 2n−1Designs
作者:
PeterW.M. John,
期刊:
Technometrics
(Taylor Available online 1966)
卷期:
Volume 8,
issue 3
页码: 469-480
ISSN:0040-1706
年代: 1966
DOI:10.1080/00401706.1966.10490380
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
After a 2n−kfractional factorial has been analysed, an experimenter may wish to carry out a further fraction to improve some estimates and break chains of aliases. The problem of augmenting a 2n−1half replicate by a nonoverlapping 2n−kdesign is discussed. In each alias set for the 2n−kfraction the effects occur in pairs as aliases from the half replicate. If only one of these pairs in a given alias set contains two nonnegligible effects, then that chain is broken. If more than one pair has both effects nonnegligible, no chains are broken. Procedures are given for augmenting four-letter plans for four or six factors.
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