{
  "protocol_id": "xyz_multiscale_minimum_position_change_v4_20261027",
  "speed_xyz_mps": 4.0,
  "acceleration_xyz_mps2": 15.0,
  "acceleration_half_windows_ms": [
    55,
    77,
    110
  ],
  "rounding_half_width_each_axis_m": 0.0005,
  "raw_screen": "strict exceedance after subtracting sqrt(3)*1mm/dt speed or sqrt(3)*2mm/h\u00b2 acceleration rounding bound; numerical comparison tolerances1e-9/1e-8 only",
  "candidate_constraints": "all affected adjacent speed and each multiscale acceleration XYZ norm within4/15; high precision solver positions have no rounding allowance",
  "objective": "minimize squared XYZ displacement from raw positions in each local candidate interval; no acceleration smoothing penalty, no fitted v/a endpoints",
  "anchors": "all points outside current variable interval fixed; full true reset-to-footer record; one-sided support at actual record boundaries",
  "shape": "each axis lies within local original min/max including adjacent fixed anchors; never require directional monotonicity",
  "expansion_samples_each_side": [
    0,
    5,
    10,
    20,
    40,
    80,
    160,
    320,
    "whole_record"
  ],
  "classification": "engineering reconstruction, not unique true motion or physiological-limit validation",
  "scope": "all1440 selected full original trials, not just54 legacy cases",
  "no_threshold_retuning": true,
  "diagnostic_only_acceleration_half_windows_ms": [
    11,
    33
  ],
  "scale_revision_basis": "Of11ms exceedances with complete support,92.6% pass33/55/77/110; of33ms exceedances96.2% pass55/77/110,96.6% of33-only windows contain an exact XYZ repeat. See sampling_diagnosis and sampling33_diagnosis. These are acquisition-update signatures, not proof of body acceleration. Main55/77/110 evaluate110/154/220ms supports;77 breaks the common5-frame alias. Bounds4/15 unchanged.",
  "solver_objective_scaling": "Mean squared change in centimeter-scaled position variables; identical minimizer to unnormalized squared position objective, improved conditioning.",
  "sampling_audit_correction": "Reversal signs use exact integer-mm second-difference dot products.66ms repetition examines only6internal links, not the preceding outer link. Main counts and operational thresholds unchanged."
}