Figure 6. Homogeneity/Completeness scatterplots demonstrating base-algorithm + Complet+ vs. base algorithms (Default, Connected Component clustering both with highest sensitivity of 7.5).

Complet+ can improve completeness of each algorithm by a greater amount than is lost in homogeneity. By merging clusters whose representatives are reciprocal hits (given an e-value threshold) of each other allows more clusters to be merged than stricter connected node criteria by the CC algorithm.