Separation indices for the type of movie derived from the four cast-size metrics.

Note that larger is better for the Dunn index, and smaller is better for the Davies-Bouldin index. The best estimate (emboldened for ease of reading), by a large margin, is the Shannon metric.

请注意，邓恩指数（Dunn index）数值越大表现越优，戴维斯-布尔丁指数（Davies-Bouldin index）数值越小表现越优。大幅领先其余方法的最优估计结果（已加粗以方便阅读）为香农度量（Shannon metric）。