2.0grouped in your browser by cutting the stored merge
tree — a view, not a corpus claim
pinned topics are laid out in rings by hop distance;
grouping is suspended while anything is pinned
both are your view of the corpus, never a claim
about it: the panel's per-family figures stay corpus-wide
seed
keyword
corroborated (named by hand and extracted)
emergent
shares papers
semantically near
group (your cut of the merge tree)
paper (double-click a topic)
paper in more than one topic
fainter = overlap less surprising