Figure 4.

Analysis of minimizer hits to explain accuracy differences between Kraken2 and Cliffy. Focuses on the four data sets with the largest accuracy gap between Kraken2 and Cliffy (using LCA query and not approximate document listing). Looking only at the reads that were false positives for Kraken2 and true positives for Cliffy or reads that were true positives for both tools, we added up the number of minimizers that Kraken2 identified at each level of the taxonomy as well as minimizers that did not hit anything in the database to understand why Kraken2's accuracy was lower than Cliffy despite both tools using the LCA query.

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