Figure 4
The four clusters of VCs defined by gaussian finite mixture modelling. Dimension reduction projection of the finite mixture modelling results. Point shapes and colours indicate the different clusters (blue: cluster 1, red: cluster 2, green:cluster 3 and purple: cluster 4). In the top plot items that match the majority type of that cluster are labelled with their corresponding date, with those not matching labelled in the plot below. In both plots the mismatching items are circled. In the top plot contour plots of the estimated mixture densities are shown. In the bottom plot the uncertainty boundaries of the clustering are indicated.
