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Fig. 2 | Genome Biology

Fig. 2

From: Improved metagenomic analysis with Kraken 2

Fig. 2

Comparison between Kraken 2 and other sequence classification tools. a Processing speed (in millions of reads per minute) and memory usage (measured by maximum resident set size, in gigabytes) are shown for each classifier, as evaluated on 50 million paired-end simulated reads with 16 threads. Accuracy results are shown for b 40 prokaryotic genomes and c 10 viral genomes. The results here are shown for sensitivity, positive predictive value (PPV), and F1-measure as evaluated on a per-fragment basis at the genus rank, with 1000 reads simulated from each genome. The strains from which reads were simulated were excluded from the reference libraries for each classification tool. “Kraken 2X” is Kraken 2 using translated search against a protein database. Full results for these strain-exclusion experiments are available in Additional file 1: Table S1

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