Figure 9. Comparison of TF-IDF and ALFY with an empirical dataset.

Both A and B represent the genome of Staphylococcus aureus TW20. A shows the result of ALFY analysis¹⁵; regions inferred to have been transferred from MRSA252 are represented in black, while regions homologous between TW20 and USA300.TCH15156 are shown in grey. B shows the result of TF-IDF analysis. TF-IDF can infer LGT only from outside the target group, so no region is in grey. Both plots were generated from analysis of the seven S. aureus genome dataset.