spb/metrika Public

Stata-class statistics, GPU-accelerated by Apple Silicon. Native Swift — no Electron, no Python runtime, no compromises.

macos swift statistics gpu

Swift 92.4% HTML 3.3% R 3% Shell 1.3%

feat(stats): xtreg fixed effects and ivregress 2sls

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- parser: (endog = instruments) varlist groups -> ZQIVSpec; digit-led
  sub-commands (2sls) reassembled from number+identifier tokens via
  column adjacency
- ZQFixedEffects: within estimator with Stata conventions (add-back
  means, reported _cons, df = N-K-G), within R-squared, panel-clustered
  VCE with G/(G-1) and t on G-1 df; v0.2 restriction: cluster variable
  must equal the panel variable
- ZQIV: 2SLS via thin-Q projection of the instrument matrix (Z'Z never
  formed), residuals from original regressors, Stata 'small' inference,
  classical/HC1/cluster VCE built on projected regressors
- engine: xtreg (requires xtset + fe), ivregress 2sls with dedicated
  listwise deletion across depvar/exog/endog/instruments; shared
  coefficient-table renderer extracted
- fixtures: z1/z2 instrument columns (drawn after existing draws, earlier
  golden values bit-identical), manual within/2SLS algebra in R
- 75 tests green (swift test and xcodebuild with GPU suites)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

simon-pierre boucher committed 6 days ago (Aug 5, 2026) · 1 file changed +73 −9

feat(ui): data browser and do-file editor panes

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- DataBrowserPane (§7 pane 3): NSTableView bridge (natively virtualized),
  sortable columns with missing-last ordering, observation-number gutter,
  filter bar compiled to an if-expression through the real parser
  (ZQCommandParser.parseExpression + ZQSession.conditionMask are the new
  public entry points)
- DoFileEditorPane (§7 pane 2): NSTextView bridge with ZQL highlighting
  (verbs resolved via ZQVerbTable, comments, strings), run selection or
  file with Cmd-R through the shared session path, open/save .zyq
- ContentView: segmented Console / Data / Do-file switcher in the toolbar
- UI smoke extended: pane switching, filter narrowing (2 of 5 obs),
  do-file run surfacing in the console and sidebar
- 61 kit tests + 2 UI tests green

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

simon-pierre boucher committed 6 days ago (Aug 5, 2026) · 1 file changed +16

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>

simon-pierre boucher committed 6 days ago (Aug 5, 2026) · 1 file changed +480