spb/metrika Public
Stata-class statistics, GPU-accelerated by Apple Silicon. Native Swift — no Electron, no Python runtime, no compromises.
Swift 92.4%
HTML 3.3%
R 3%
Shell 1.3%
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feat(stats): permutation tests and single-variable graphics
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- ZQResampling.permutationIndices: permutation as argsort of 64-bit Philox keys — order-free and counter-addressable so a future GPU argsort path reproduces it exactly; dedicated stream offset (bit 63, applied after word expansion) keeps permutations disjoint from bootstrap draws under the same seed - engine: 'permute, reps(#) [seed(#)]: reg …' — permutes the response within the estimation sample, parallel chunked refits, empirical two-sided p per coefficient (c, reps, p, SE(p)); degenerate _cons row omitted - planner: GPU heuristic restricted to bootstrap until the permute argsort path lands - graphics: standalone histogram/scatter/kdensity verbs; single-variable histogram (Sturges default, bins() option) and Epanechnikov kdensity with Silverman bandwidth (density integrates to 1 in tests) - 81 tests green (swift test and xcodebuild with GPU suites) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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feat: bootstrap Metrika v0.1 skeleton with working ZQL vertical slice
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- MetrikaKit SPM package: ZQParser, ZQPlanner, ZQEngine, ZQData, ZQStats, ZQGPU, ZQGraphics, ZQPlugins (Swift 6, strict concurrency) - ZQL parser: lexer, Pratt expressions, factor variables, prefix commands, column-cited errors with Levenshtein verb suggestions - ZQData: DuckDB-backed load/save (parquet, csv, json, arrow) - ZQStats: OLS via LAPACK QR, HC0-HC3 and cluster-robust SE, summarize, t/F distributions accurate in the far tails - ZQGPU: Philox4x32-10 reference RNG, counter-addressable bootstrap - ZQEngine: session actor with use/save/gen/replace/drop/keep/summarize/ regress/count/list/graph/bootstrap/set seed/xtset/log - SwiftUI app (xcodegen): console with history, variables sidebar, Swift Charts plots; sandboxed + hardened runtime entitlements - Tests: 44 green (parser golden, R fixtures at 1e-10, Philox KAT, end-to-end engine); Tests/Fixtures/generate.R; Tests/Bench harness - scripts: check_headers.sh + pre-commit hook, make_icns.sh, release.sh Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>