Statistics on the two selected small clusters. Cluster 1 and Cluster 2 were selected based on marker nodes: The greatest number of marker nodes that were found co-located in the same cluster across all 12 clustering methods were used to define their common clusters, and the smallest of the common clusters for each set was returned. Both clusters are kmp-valid for k = 5 and p = 2. Articles refers to the total number of nodes in the cluster, core nodes refers to the number of these nodes that are core, and markers refers to the number of nodes that are markers. Authors denotes the total number of authors of articles in the cluster, Auth_5 refers to the number of authors that have at least five publications in the cluster, and Max_Pubs refers to the largest number of publications in the cluster by any single author.