benchmark: q6 ground truth - #103
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GnaneshGnani wants to merge 13 commits into
Closed
GnaneshGnani wants to merge 13 commits into
GnaneshGnani wants to merge 13 commits into
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Q6 — Distinct symbol cardinality (HLL)
Adds ground truth and 60-minute accuracy benchmark for Q6: count of distinct trading symbols per window.
Benchmark results
Setup: Day
08-11-21, full feeddata/,precision=14, 12 × 5-min windowsSketch: HyperLogLog,
precision=14Metric: max relative error
|hll_estimate − exact_count| / exact_count; threshold ≤ 2%.HLL with precision 14 achieves near-perfect cardinality estimates on this data. Maximum relative error across all windows is 0.0013 (0.13%), far below the 2% threshold. This query passes with the most headroom of any evaluated query.
Cumulative: Q1: 11/12⚠️ | Q3: not run | Q4: 12/12 ✅ | Q5: 3/12 ⚠️ | Q6: 12/12 ✅
See
results/benchmarking.mdfor per-window breakdown.