Neighbor-net

NeighborNet is an algorithm for constructing phylogenetic networks which is loosely based on the neighbor joining algorithm. Like neighbor joining, the method takes a distance matrix as input, and works by agglomerating clusters. However, the NeighborNet algorithm can lead to collections of clusters which overlap and do not form a hierarchy.

An example of a neighbor-net phylogenetic network generated by SplitsTree v4.6.

References

Bryant and Moulton : Neighbor-net, an agglomerative method for the construction of phylogenetic networks - Molecular Biology and Evolution 21 (2003)