Fig. 4
From: Constructing phylogenetic networks via cherry picking and machine learning
Tree expansion of T (a) with the trivial cherry (x, y) of \(\mathcal {T}_{(y,z)}\). (b) After picking cherry (y, z), leaf y is missing in \(T^{(1)}\). (c) Leaf x is replaced by the cherry (x, y). After completion of the heuristic, we have \(S_T = (y, z), (x, y), (y, w), (w, z)\). (d) The network \(N_T\) reconstructed from \(S^{(1)}\circ(x,y)\). Note that the input tree T is displayed in \(N_T\) (solid edges)