In general, the merges and splits are determined in a [[greedy algorithm|greedy]] manner. The results of hierarchical clustering<ref>{{cite book | author=Frank Nielsen | title=Introduction to HPC with MPI for Data Science | year=2016 | publisher=Springer | | In general, the merges and splits are determined in a [[greedy algorithm|greedy]] manner. The results of hierarchical clustering<ref>{{cite book | author=Frank Nielsen | title=Introduction to HPC with MPI for Data Science | year=2016 | publisher=Springer | |