The effects of partial tree size on score. A graph of the maximum parsimony score of the tree found by the PTM algorithm as the size of the partial trees is varied. Two partial trees will not join if doing so would create a partial tree larger than the maximum size. Using larger partial trees tends to yield slightly better parsimony scores after PTM only, but near optimal scores are found by all searches after TBR refinement.
Sundberg et al. BMC Bioinformatics 2012 13(Suppl 13):S8 doi:10.1186/1471-2105-13-S13-S8