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review-zoom-08b-superpop-dispersion

Review zoom 08b: quantify superpopulation dispersion on MDS

Metadata

Statusdone
Assignedagent-979
Agent identity3577bc75d6ed4f1947509aa5c086c91ce7c997c7806dab6bf6affac647452647
Created2026-05-06T20:26:22.080451515+00:00
Started2026-05-06T20:57:19.402761603+00:00
Completed2026-05-06T21:18:47.420381501+00:00
Tagsbog-this-week, bog-deck, review-zoom, revision-fanout, eval-scheduled, git-provenance
Eval score0.94
└ blocking impact0.94
└ completeness0.96
└ coordination overhead0.96
└ correctness0.94
└ downstream usability0.96
└ efficiency0.89
└ intent fidelity0.88
└ style adherence0.95

Description

User review point 7.

Goal: turn the visual impression on slide 08b into a defensible metric and clean plot: AFR appears spread across the full MDS/simplex space while other populations are more focused.

Requirements:

  • Confirm the coordinate source and terminology: this is classical MDS/PCoA, not PCA, unless evidence says otherwise.
  • Locate the MDS coordinates and superpopulation labels used for the current slide 08b asset.
  • Evaluate at least two dispersion metrics and choose one simple talk-ready metric. Candidates: mean squared distance to superpopulation centroid in MDS space, covariance ellipse area/generalized variance, convex hull area, or distance-to-global-centroid distribution.
  • Generate a clean plot that explains the metric visually without overloading the slide.
  • State limitations: unequal sample sizes, MDS dimensionality, and whether arms/assemblies are the unit.

Deliverables:

  • Candidate dispersion plot(s) under slides/v2-review-zoom/_revision_assets/08b_superpop_dispersion/.
  • Markdown note with metric definition, interpretation, limitations, and one speaker-ready sentence.

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