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Headline result
0.9200
Method & source P@k (Precision at k)Manning, Raghavan, Schütze (2008) IIR §8.4

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### Aggregate

Every one of the 20 fragment queries returned a fragment-containing URI at rank 1. The symbol_components mechanism is doing its job at the top of the ranking.

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### Per-fragment

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### What This Baseline Confirms

The symbol_components column does what #77 designed it to do: a query for a CamelCase fragment surfaces pages whose symbols contain that fragment as a component.

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### What This Baseline Does Not Cover

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### Method Recap

20 fragment queries. For each: run cupertino search "<fragment>" --limit 10, extract top-10 URIs, apply a loose regex that matches URIs whose path contains the fragment as a substring in any segment.

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### Combined Phase 1 Baseline Coverage on V1.2.0

Four of eight Phase 1.x classes from §1.4 now have documented baselines. Four remain: C (acronym), G (prose), H (symbol-attribute), and Phase 1.7 agent-end-to-end.

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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.

### P@k (Precision at k)

Manning, Raghavan, Schütze (2008) IIR §8.4

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### Mean Reciprocal Rank

Voorhees (1999), TREC-8 QA Report

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