Fig. 1
From: SNV-FEAST: microbial source tracking with single nucleotide variants
Signature SNV selection and SNV-FEAST. A A signature SNV is present in one or few but not all sources. By contrast, a non-signature SNV is generically present in multiple sources and thus provides little discriminating information. B SNV-FEAST estimates the proportion a given sink derived from various sources using the read counts for each allele in sinks and sources