Run benchmark queries repeatedly for stable measurements#74
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Each benchmark query is now executed 10 times with median, min, and max times reported. This reduces variance from cache warming and system noise. Changes: - Add benchmark_query() PL/pgSQL function to both Cranfield and MS MARCO query files that runs queries in a loop and calculates median - Update extract_metrics.sh to parse new output format (extracts median from "Execution Time: X.XXX ms (min=..., max=...)" lines)
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Summary
Testing
Manually verified query function works locally. Benchmark results will be validated on next nightly run.