Fig. 2
From: ABLE: blockwise site frequency spectra for inferring complex population histories and recombination
Three demographic models for which ABLE was compared against analytic expectations for the bSFS. a A single population with a sudden reduction in Ne. b IM: isolation between populations A and B followed by continuous unidirectional migration (from A to B) at rate M migrants per generation. c IUA: isolation between three populations A, B, and C followed by unidirectional admixture of a fraction f from A to B. Analytic expectations for these models can be found in [18, 22, 27]