couger 1.8.2 Identify co-factors in sets of genomic regions
COUGER can be applied to any two sets of genomic regions bound by paralogous TFs (e.g., regions derived from ChIP-seq experiments) to identify putative co-factors that provide specificity to each TF. The framework determines the genomic targets uniquely-bound by each TF, and identifies a small set of co-factors that best explain the in vivo binding differences between the two TFs.
COUGER uses classification algorithms (support vector machines and random forests) with features that reflect the DNA binding specificities of putative co-factors. The features are generated either from high-throughput TF-DNA binding data (from protein binding microarray experiments), or from large collections of DNA motifs.