KNN → KFN Sweep — Samusik_01

Two views of the same 10,000-cell Samusik_01 UMAP (mouse bone marrow, 39 surface markers). Click any cell to start its animation. A window of neighbor ranks slides outward — ranks [1–100], then [51–150], [101–200], … out to the farthest neighbors.
Early frames are the k-nearest neighbors; late frames are the k-farthest. The right panel shows how well — or how poorly — the UMAP preserves the true high-dimensional neighborhood as the window moves from near to far. Agreement = the percent of cells shared by the left and right windows at the current rank band. Everything runs in your browser; no data is uploaded.
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Agreement: —
kNN in UMAP space
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kNN in high-D marker space
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Data: Samusik_01 (Samusik et al., 2016), 39 surface markers, subsampled to 10,000 cells. Built by Tyler Burns. Inspired by Sleepwalk.