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route restarts at zero","coordinates":"degrees, rounded to three decimals","missingFraction":"0..1 of saved report slots"},"attribution":{"dataset":"2021 Amazon Last Mile Routing Research Challenge","publisher":"Amazon","license":"Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)","licenseUrl":"https://creativecommons.org/licenses/by-nc/4.0/","registryUrl":"https://registry.opendata.aws/amazon-last-mile-challenges/","citation":"Amazon Last Mile Routing Research Challenge dataset (2021), Amazon. Distributed under CC BY-NC 4.0. Dataset description: 2021 Amazon Last Mile Routing Research Challenge: Data Set, Transportation Science, doi:10.1287/trsc.2022.1173.","retrievalDate":null,"retrievalDateNote":"Exact original retrieval timestamp was not recorded. Saved source metadata records checksum verification on 2026-10-17; no download occurred for this export.","exportDate":"2026-10-19","sourceMetadataSha256":"64cdde9416bc70215ad628f907a514c18ddd7b3418d9eca9755a15dd21afeaf0"},"effort":{"exportNewFits":0,"exportModelLoads":0,"exportPredictions":0,"exportPlannerCalls":0,"exportSimulatorCalls":0,"exportEvaluatorCalls":0,"exportNewOutcomeCalculations":0,"recordedScientificPlannerCallsRound8":25152,"actualHumanReviews":0,"actualDeferrals":0,"humanSeconds":null,"humanCost":null,"computeCost":null,"notes":["Recorded scientific compute is historical; exporter only reads, verifies and serializes saved artifacts.","Human effort and monetary costs have not been measured."]},"aiUseDisclosure":"AI coding/research assistants developed the simulation and export tooling and helped interpret saved results. The displayed values are copied from hash-verified saved artifacts; narrative labels and example selection are illustrative.","limitations":["Four examples were selected retrospectively from inspected development results; they are illustrative, not representative or fresh validation.","Amazon travel matrices are historical averages. Current traffic, ages, report faults and supporting feeds are simulated.","All snapshots restart a complete route at clock zero. timeMinutes selects the saved report snapshot, not an already driven route.","Lateness is measured at service start against sparse package deadlines. Stop windows summarize cached bounds; they do not replace the original package deadline arrays.","Coordinates are rounded to three decimal places. Orders are schematic directed stop sequences, not street geometry.","Per-stop package counts are unavailable in the cached route object and remain null; no per-package data is exported.","Estimated metrics only copy saved observable schedules. Missing estimated validity remains null; retrospective evaluation never fills estimated fields.","At most 24 selected edges per plan are shown, prioritized by observable repair/report disagreement. The full order is always retained.","Shared supporting observations are not independent per-edge reports; supportCount at snapshot level copies the saved unique_feed_reports counter.","Original raw is an older-budget historical plan and is the exact guard fallback; matched raw uses common starts and the new budget.","No new model loads, training, prediction, planning, simulation, reference-matrix decoding or outcome evaluation occurs in this export.","No policy qualified in round eight. No real Amazon savings, optimality, calibrated safety or unseen-test claim for S79.","Actual human review/deferral count is zero; human effort, cost and inference uncertainty are unmeasured/null."]}