Single-read mapped reads? Fastp paper unclear
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8 weeks ago
amy__ ▴ 20

Can anyone help me understand what the single-map read means in the fastp paper: https://academic.oup.com/bioinformatics/article/34/17/i884/5093234

It is table 2.

The corresponding part just says: fastp generated the lowest number of mismatches, clipped reads and single-read mapped reads. Trimmomatic and Cutadapt generated much more clipped or single-read mapped reads.

Thanks! Amy

fastp single-read reads • 168 views
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8 weeks ago

In my opinion it is not worth getting into interpreting the words too closely, it just means that the authors came up with some measures that demonstrated their tool is "better" than the competition.

But then the tool itself operates in a different way, so "better" or "worse" depends on what the goals are.

Here I suspect that they count how many pairs end up "broken" up because one of the pairs did not pass. Evidently, we'd want the fewest pairs to be broken.

But again fastp does something else than Trimmomatic; By default it trims right-to-left whereas Trimmomatic has a much stricter left-to-right operation.

That being said, fastp is a great tool and I would recommend it.

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Oo thank you!

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