摘要(英) |
For unstructured experimental units, minimum aberration in Fries and Hunter (1980) is a popular criterion for choosing regular fractional factorial designs. Following which, many related studies focused on multistratum
factorial designs with multiple error terms that arise from the complicated structures of experimental units. Chang and Cheng (2018) proposed a Bayesian criterion, which can be considered as a generalized version of the minimum aberration for selecting optimal multi-stratum factorial designs. Particle Swarm Optimization (PSO) algorithm is a popular optimization method that has been widely used in various applications. In this thesis, a new version of PSO is proposed to select regular and nonregular multi-stratum designs. We treat defining words as particles in PSO and link PSO with Design key matrix for selecting regular ones. For nonregular multi-stratum designs, we treat treatment combinations as particles in PSO. |
參考文獻 |
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