From the docs in GitHub: "The size of the dots corresponds to the number of reviewed papers for literature reviews (non-reviews have the smallest size)..."

[–] PKscope@lemmy.world 2 points 4 days ago

I wondered the same. It doesn't seem to correlate to P-Size, citations, or participants. Maybe a combined factor of each that is calculated? I'm really not sure.

[–] 48954246@lemmy.world 2 points 4 days ago

Couldn't quite work that out either. I initially thought it might have been to do with the number of citations but that didn't pan out

[–] Quexotic 1 points 4 days ago

I think it might be the number of papers used to answer the question. Not totally certain though