Fig. 3
From: High-resolution strain-level microbiome composition analysis from short reads
A An example of the k-mers assignment in the CST-based indexing structure. Each node possesses k-mers unique to its rooted subtree and is shared by most of the strains in the subtree. Each bar with a specific color represents a k-mers and each node is assigned with one unique k-mers in this example. B When constructing node v’s k-mers set, all leaf nodes will be divided into three groups named \(PRE_v\), \(SUB_v\), and \(EXT_v\)