Integration of gene significance with its presence/absence in different strains. A feature (in this study a gene) that is found to be important to separate strains of different phenotypes is assumed important. Present (for the majority of strains): feature is present in at least p percent (default of 75%) of strains for a given phenotype. Absent (for the majority of strains): feature is absent in at least 75% of strains of a given phenotype. Remaining genes are present in a subset of strains.
Bayjanov et al. BMC Genomics 2012 13:170 doi:10.1186/1471-2164-13-170