nx_bench_metrics.nx

nx_bench_metrics.nx -- sovereign retrieval-quality metric kernels. module: nishi-core.search.bench.metrics depends: fx.nx (Q16.16 fixed-point + fx_log2), syscalls.nx (scratch mmap) capability: CORE_COMPUTE wired_status: FULLY_WIRED The math behind the "Mount Everest of information delivery" leaderboard: score Nishi 1:1 against the real engines on a chosen turf. Built bits-up in deterministic Q16.16 fixed-point so a result is BYTE-IDENTICAL on every machine -- the two-is-one parity discipline demands that an IEEE-754 port could never satisfy (different libm log2 => different bits). All ratio/gain values are Q16.16 (FX_ONE == 1.0). Ranks + counts are plain integers. Every formula cites its source; goldens are in nx_bench_metrics_test.nx. Citations: DCG/nDCG Jarvelin & Kekalainen, ACM TOIS 2002. MAP/MRR/precision@k/recall@k Manning/Raghavan/Schutze, IIR 2008 ch.8. primary-source precision Nishi anti-Google thesis (docs/00-VISION): first-hand material (the film/photo/record itself) outranks derivative commentary. Encoded as: tier score is the graded gain; derivative results contribute zero gain even when topically relevant.