SAPC research artifacts v2

Results of identify.py version 2026-10-09 and the model of the second-robot study.

• sapc-results.zip: result files behind every table and figure of the revised manuscript, for the FR3 (research/results/) and the KUKA LBR iiwa 14 (research/kuka/results/). The group selection adds a backward pass, one-for-one exchanges and the report of tied supports; the FR3 same-simulator, Isaac Sim, contact and audit results are unchanged, the Gazebo calibration drops a compensating link-2 group, and case C6 is exact in all draws.
• sapc-models-iiwa.zip: the unmodified MuJoCo Menagerie kuka_iiwa_14 description (commit feadf76) with its BSD-3-Clause license, extracted to research/models/kuka_iiwa_14/.

The trajectories and the FR3 models/worlds are unchanged: use sapc-trajectories.zip and sapc-models-worlds.zip of research-artifacts-v1.

SAPC research artifacts

Research artifacts accompanying Fidelity Is Not Identification: Structure-Aware Calibration of Robot Digital Twins.

• sapc-results.zip: current-protocol benchmark, editing, stability, and cross-engine results.
• sapc-trajectories.zip: fixed Gazebo/PhysX logs and the same-torque illustration.
• sapc-models-worlds.zip: FR3 model assets with original license, generated worlds and collection inputs.
• release-manifest.json: archive sizes and SHA-256 checksums.

Extract at the repository root; paths populate research/. Each archive includes a file-level MANIFEST.json. MuJoCo identification trajectories are generated from the fixed seeds by the supplied scripts. See research/README.md for reproduction. Protocol: 2026-09-25b.