Aglet

Triage Top N and Other Grouping

Top-N triage asks which measure ranks categories and what happens to everything outside the displayed set. Inspect ties, filters, nulls, totals, and the Other label together. Preserve a fixture with a boundary tie and a small category outside the top set so a tidy chart does not conceal grouping choices.

Establish what is happening

  1. Name the ranking rule

    Write the measure, direction, category grain, N, tie handling, null policy, and filter scope. Define whether ranking happens before or after a period or segment filter. Keep the full category set and expected top members beside the chart configuration.

  2. Trace the Other bucket

    Follow categories through filtering, aggregation, ranking, tie resolution, grouping, color assignment, total calculation, and export. Compare members and values in the Other bucket with the full population. Mark the first stage that drops a category or makes totals stop reconciling.

  3. Bound affected surfaces

    List charts, tables, cards, legends, exports, and comparisons using top-N logic. Separate intentional truncation from an unlabelled aggregate. Ask the report owner to resolve whether ties expand the set, share a rank, or enter Other.

What to carry forward

Triage is complete when ranking measure, N, tie rule, Other membership, first divergence, affected surfaces, and owners are explicit. Keep the finding provisional when the report shows an Other bucket without revealing its membership or calculation.

Technical background: Google Cloud documentation.

Keep the decision with the work.

Use a Work Item in Aglet to record the problem, the evidence you have, and the next decision. Add an owner and priority, then keep updates in the discussion so the next person can follow the reasoning.

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