Fig. 3

Cluster size distribution of pseudo-reference clustering datasets. The x-axis of the graph is shown on log-scale and it represents the size of clusters in the case of the pseudo-clustering datasets generated from the WOMBAT and PubChem MLSMR datasets. The y-axis represents the relative frequency of certain cluster sizes. A given dataset is characterized by cluster sizes that have a higher frequency. The overall frequency of cluster sizes provides the cluster size profile of a dataset. As it can be seen the cluster size profile of the two datasets are nearly identical, with small differences in the low cluster size and in the large cluster size regions