Now showing items 1-4 of 4

    • Cluster-Based Bounded Influence Regression 

      Lawrence, David E.; Birch, Jeffrey B.; Chen, Yajuan (Virginia Tech, 2012)
      A regression methodology is introduced that obtains competitive, robust, efficient, high breakdown regression parameter estimates as well as providing an informative summary regarding possible multiple outlier structure. ...
    • Cluster-Based Profile Monitoring in Phase I Analysis 

      Chen, Yajuan; Birch, Jeffrey B. (Virginia Tech, 2012)
      An innovative profile monitoring methodology is introduced for Phase I analysis. The proposed technique, which is referred to as the cluster-based profile monitoring method, incorporates a cluster analysis phase to aid in ...
    • Effect of Phase I Estimation on Phase II Control Chart Performance with Profile Data 

      Chen, Yajuan; Birch, Jeffrey B.; Woodall, William H. (Virginia Tech, 2014)
      This paper illustrates how Phase I estimators in statistical process control (SPC) can affect the performance of Phase II control charts. The deleterious impact of poor Phase I estimators on the performance of Phase II ...
    • A Phase I Cluster-Based Method for Analyzing Nonparametric Profiles 

      Chen, Yajuan; Birch, Jeffrey B.; Woodall, William H. (Virginia Tech, 2014)
      A cluster-based method was used by Chen et al.²⁴ to analyze parametric profiles in Phase I of the profile monitoring process. They showed performance advantages in using their cluster-based method of analyzing parametric ...