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Headline result
+8 / 30 queries newly rank-1
Method & source Mean Reciprocal Rank Voorhees (1999), TREC-8 QA Report

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Each card opens its own page. The headline and charts above are all you need at a glance; the cards are for the why and how.

### Aggregate

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### Paired Statistical Tests

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### Buckets

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### Cross-validation Note

If this audit's headline + significance numbers agree directionally with search-quality-versiondiff-v1.1.0-to-v1.2.0.md's (the original 50-query corpus), the v1.2.0 > v1.1.0 claim is robust to corpus choice.

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### Pipeline

flowchart TD Q["30 canonical-lookup query strings (corpus V2)<br/>zero overlap with the original 50-query corpus"]:::input R["per-query regex pattern<br/>accepts canonical + specific-variant URIs"]:::input Q --> H[script…

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## Sources cited in this measurement

Every metric and method this audit relies on, with a link to the foundational source. Auto-collected from the audit text.

### Mean Reciprocal Rank

Voorhees (1999), TREC-8 QA Report

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### P@k (Precision at k)

Manning, Raghavan, Schütze (2008) IIR §8.4

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### NDCG

Järvelin & Kekäläinen (2002)

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### Wilcoxon signed-rank test

Wilcoxon (1945), Biometrics Bulletin

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### McNemar's test

McNemar (1947), Psychometrika

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