{"sources":[{"area":"Physics and equations","provider":"NIST / CODATA","url":"https://physics.nist.gov/cuu/Constants/","use":"Reference constants, units and stated uncertainties. Select an edition and propagate uncertainty.","status":"catalog verified; no device measurements"},{"area":"Numerical software","provider":"NIST Statistical Reference Datasets","url":"https://www.nist.gov/itl/sed/statistical-reference-datasets","use":"Compare statistical routines with certified computational values.","status":"PiDigits baseline executed"},{"area":"Economics","provider":"World Bank Open Data","url":"https://data.worldbank.org/","use":"Select indicator, country, period, units and release vintage; separate revised observations from forecasts.","status":"catalog verified; dataset selection needed"},{"area":"Space and Earth observations","provider":"NASA Open Data","url":"https://data.nasa.gov/","use":"Choose the instrument, product version, calibration, quality flags and matching time/location.","status":"catalog verified; dataset selection needed"},{"area":"Extraction and citations","provider":"Local originals and independently annotated examples","url":null,"use":"Compare extracted words, formulas, table cells and citations against reviewer-labeled originals. Keep private files local.","status":"annotations and independent reviewers needed"},{"area":"Devices and simulation validation","provider":"Controlled experiments and calibrated instruments","url":null,"use":"Record real inputs and outputs, calibration, uncertainty, repeated trials and a comparison model.","status":"physical observations needed"}],"baseline":{"schema":"network0-numerical-baseline-v1","executed_at":"2026-09-13T15:24:49.811Z","dataset":"NIST PiDigits","source_url":"https://www.itl.nist.gov/div898/strd/univ/data/PiDigits.dat","raw_sha256":"e9421a2f4c0a31c505099332b4d22e507e808953c3c57bddae9226f25587d7d2","implementation_sha256":"09822dd1cf86dd3420c254f1c2c8e4e7fc4cfd7a0dbb607d016e8041ae529165","implementation":"Welford one-pass sample statistics","runtime":"v24.19.0","classification":"executed numerical software reference check; constructed data, not experimental observations","ai_accuracy":null,"before_after_improvement":null,"results":[{"metric":"count","expected":5000,"absolute_tolerance":0,"actual":5000,"absolute_error":0,"pass":true},{"metric":"mean","expected":4.5348,"absolute_tolerance":1e-12,"actual":4.53480000000001,"absolute_error":1.0658141036401503e-14,"pass":true},{"metric":"sample_standard_deviation","expected":2.86733906028871,"absolute_tolerance":1e-12,"actual":2.8673390602887068,"absolute_error":3.1086244689504383e-15,"pass":true}],"limits":"One public dataset, two statistics plus count. Tolerances are numerical acceptance bounds, not measurement uncertainty. No generalization or AI-quality claim. Raw file retained locally only."},"checked_at":"2026-09-13","overall_accuracy":null}