A Critical Assessment of Two-Stage Group Screening Through Industrial Experimentation

Summary: [This abstract is based on the authors' abstract.] The practicality of running a two-stage group screening experiment is considered for investigating interactions among factors having an effect on a response. The design and analysis of such an experiment is discussed for a study conducted at Jaguar Cars on cold start optimization. Insight is provided into how group screening works in practice and how the factorial effects of the individual factors relate to those of the grouped factors. It is shown that the group screening process provides an efficient method of detecting interactions among a large number of factors.