Datasets:
HelenPeng
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ExeWorldBench

Dataset card Data Studio Files
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* levers/seesaws require reasonable pivots;
* articulated rods require appropriate joints;
* pendulums require suspension points;
* paddle wheels require fixed rotational axes;
* tracks, funnels, and chutes must physically support or constrain moving objects.
Successful scripted motion alone does not imply correct mechanical structure.
### C. Initial Physical Validity
Only the initial stage may have externally specified actuation or initial motion.
Before being triggered, downstream objects must begin in physically plausible states.
Penalize unsupported floating objects, unconstrained balls stationary on slopes, unbalanced freely rotating mechanisms held without support, displaced pendulums without holding mechanisms, downstream objects already moving, or other clear violations of gravity, support, contact, or equilibrium.
### D. Spatial Arrangement & Assembly
Check whether component positions, heights, orientations, distances, contacts, and alignments support the observed mechanical process.
Penalize disconnected or misaligned components, unreasonable gaps, interpenetration, impossible geometry, or layouts that form separate unrelated mechanisms rather than one coherent device.
### E. Camera & Visual Quality
Important components, balls, interactions, and motions should be sufficiently visible for reliable evaluation.
Penalize severe cropping, occlusion, blur, deformation, broken geometry, or rendering artifacts.
Photorealism is not required.
### Visual Structure Score (0–10)
**10** = The mechanical structure is complete and fully correct, with all major components fully visible in the frame. Geometry, topology, connectivity, spatial relationships, and relationships between mechanical components closely match the reference. All contacts, joints, engagements, and relative placements are mech...
**9** = The mechanical structure and relationships between components are fully correct and clearly visible, with no physically implausible relationships. All major components are fully visible. Only very minor shortcomings exist in aesthetics, lighting, materials, 3D presentation, or camera placement, while the overal...
**8** = The mechanical structure and relationships between components are correct and physically plausible, with no clear interpenetration, unintended overlap, floating components, incorrect engagement, or other mechanically implausible relationships. All important relationships can be visually verified. The main limit...
**7** = No clear physically or mechanically incorrect relationship is visible, but some relationships between components are difficult to verify because of camera angle, occlusion, or visual-quality limitations. Most important connections and spatial relationships remain observable, with only limited uncertainty.
**6** = The visible structure remains mechanically plausible, with no clearly observed interpenetration, floating components, incorrect engagement, or other physical errors. However, several important relationships between components cannot be reliably verified because of camera angle, occlusion, poor visibility, or re...
**5** = The overall structure remains mostly correct, but a small number of clear physical or mechanical relationship errors appear, typically limited to 1–2 local cases or a few frames. Examples include two components visibly intersecting, a ball or component unnaturally floating without support, components that shoul...
**4** = Physical or mechanical relationship errors become more frequent or substantial, with multiple cases of interpenetration, floating components, incorrect engagement, implausible connections, or other invalid component relationships. Important components may also be substantially cropped or occluded, although the ...
**3** = Severe structural or physical errors are widespread across multiple components. Interpenetration, floating, incorrect connections, implausible component relationships, or incomplete components occur extensively, or the component modeling, mechanical topology, and connectivity themselves are clearly incorrect, p...
**2** = Most of the mechanical structure contains severe problems. Many major components are missing, severely malformed, misplaced, disconnected, or unobservable, with only limited structure corresponding to the reference.
**1** = Only minimal recognizable structure related to the reference remains. Most major components and mechanical relationships are missing or severely incorrect, and the result largely fails to form a meaningful mechanical device.
**0** = No meaningful valid mechanical structure corresponding to the reference is present or observable.
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2. EXECUTABLE CAUSAL MECHANISM
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Evaluate whether the system forms a genuine, continuous, complete, and mechanically plausible execution process.
This jointly considers:
* **Mechanism Execution:** whether each component itself executes correctly.
* **Causal Connectivity:** whether consecutive stages are connected through genuine mechanical interactions.
These are not scored separately. Instead, score each segment of the inferred execution chain.
First infer the actual execution order from the full frame sequence. Never use the input component order as the execution order.
For example:
C1 → C2 → C3 → C4
is evaluated as:
initial → C1
C1 → C2
C2 → C3
C3 → C4
Each segment is scored independently from 0–10.
* `initial → A` evaluates the complete mechanical execution of A.
* `A → B` evaluates **the causal mechanical interaction from A to B + the complete mechanical execution of B**.
* A's own execution is not evaluated again in `A → B`.
Thus, every component's execution and every transition between consecutive components are evaluated exactly once.
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## A. MECHANISM EXECUTION
For the target component of each segment, evaluate:
* whether its motion matches its `name`, `definition`, mechanical structure, and degrees of freedom;
* whether motion direction, range, magnitude, and completeness are reasonable;
* whether its response is physically consistent with the received interaction;
* whether connected parts, pivots, hinges, and axes remain mechanically consistent;
* whether motion is continuous without teleportation, abnormal deformation, detachment, or interpenetration;
* whether the component genuinely performs a mechanical function rather than merely moving or appearing as decoration;