Public observability layer

Research, Reporting & Export

Provenance-stamped exports, audit-ready reports, and research-facing documentation.

Research, reporting & export · provenance disclaimer

Export generated from observational publications and deterministic computation. Provenance and methodology preserved. Not a regulatory determination.

Metric formula explorer

Deterministic expressions for every derived computation across the platform.

PERCENTILE_LINEAR

percentile(arr, p) = sorted[lo] + (sorted[hi] - sorted[lo]) * (rank - lo); rank = p/100 * (n-1)

MEDIAN_BY_VENUE

median across deduped per-venue EGM counts at the chosen anchor (Type B priority over Type C on duplicate publications)

YOY_OBSERVED_MOVEMENT

(latest_total - yoy_total) / yoy_total * 100, yoy anchor is the nearest available historical anchor at ≈4 quarters prior

PRE_POST_OBSERVED_MOVEMENT

(post_median - pre_median) / pre_median * 100 over the COMPARISON_WINDOW_QUARTERS=4 anchors each side; dedupe per (canonical_venue_id, anchor)

VOLATILITY_STDEV_PCT

stdev of period-over-period percentage change on the stable-coverage anchor window (venue_count ≥ 50% of LGA max)

SUSTAINED_GROWTH_PERSIST

last N=3 period-over-period diffs all strictly > 0 on the stable-coverage anchor window

HIGH_DENSITY_TOP_QUINTILE

latest LGA total_egm ≥ p80 of all LGA totals