Fig. 1
From: Using hybridization networks to retrace the evolution of Indo-European languages
a Configuration in which languages i and j are selected as neighbors by the NJ algorithm, and b configuration in which language h is identified as a recipient of lexical material from languages i and k by our algorithm for inferring explicit hybridization networks (here, the parameters α and 1-α represent the hybridization (i.e., reticulation) degree of donor languages i and k, respectively)