Estimating Alarm Thresholds for Process Monitoring Data under Different Assumptions about the Data Generating Mechanism
Figure 9
Comparison of npEM to Mclust for fitting: (a) single-component normal; (b) mixture of two overlapping normals as in Figure 6(b); (c) mixture of two well-separated normals as in Figure 6(a). In the application of both npEM and Mclust, the BIC is used to select the number of components, with the maximum BIC value corresponding to the chosen number of components.
