Diffusion-based Planning with Learned Viability Filters 62
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Physics-based characters need to plan their movements over-and-around obstacles. Diffusion models offer a possible solution, as they allow a motion planner to sample from a potentially diverse distribution of possible futures. However, they may also generate flawed plans because some samples may not satisfy hard constraints that exist only implicitly in the training data, e.g., guaranteeing balance or obstacle clearance. We propose learned viability filters that can efficiently predict the future success of a given plan, i.e., diffusion sample, and thereby enforce an implicit future-success constraint. Multiple viability filters can also be composed together at run-time to take multiple potential constraints into consideration. We demonstrate the approach on detailed footstep planning for 3D human locomotion tasks, showing the effectiveness of the viability filters in performing online planning for box-climbing, step-over walls, and obstacle avoidance. We compare to a number of alternative planning methods including reinforcement learning and return-conditioned diffusion, and further show that using viability filters is significantly faster than guidance-based diffusion prediction.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it