Branch Swap Filter

For analyses that use a Maximum Likelihood approach, the ‘branch swap filter’ analysis setting is used to set the stringency of optimization with respect to branch lengths and improvements in log likelihood values. A weaker filter will result in more exhaustive optimization so that the search may take longer but potentially, a larger search space will be explored. A stronger filter will result in less exhaustive optimization so that the search may require less time but potentially, a smaller search space will be explored.