PutCab Sequential V4 Preview10
Ten qualified demonstrations from the shared fifty-scene protocol, prepared for
user review. Three 320×240 H.264 views run at 50/3 FPS, with a 250 Hz physical
clock and 2525 observations. Run/source group: E106-R030.
The left arm operates the drawer and the right arm grasps, lifts, transfers and releases the object. Sequential contains five A→B and five B→A examples. Concurrent starts both arm programs together. CTR records its scheduled offsets and safe-lift waiting in episode provenance. Mixed selects Sequential slots 0, 2, 4, 6, 8 and Concurrent slots 1, 3, 5, 7, 9, using complementary seeds.
observation.arm_active_mask is float32[2] in left/right order and describes the outgoing
15-physics-tick action interval at observation t. observation.arm_motion_mask records commanded
coordinate changes over that same interval. Each final mask is [0,0]. Packaging
recomputed both fields from saved controls and progress cursors. Parent masks,
states, actions and video bytes are retained for Mixed, with dataset index
columns rebuilt for its concatenated sequence.
Every episode passed generation and independent replay task completion, zero unintended contacts at 0.1 mm tolerance, and replay state/termination checks. All thirty videos were decoded and their physical timestamps checked. The first successful release ends task progression; the recorded tail contains at most fourteen idle physical steps for observation alignment.
meta/lineage.jsonl records source commits, control hashes, parent published
revisions and episode indices. meta/controls and meta/arm_progress retain
the evidence for mask reconstruction. meta/shared-scenes50.json binds the
same canonical fifty seeds for the four eventual Train50 datasets; Mixed uses
complementary 25+25 parents in that protocol. This artifact contains ten preview
episodes. Lifecycle: reported → audit pending; user review governs the full set.
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