AD-WM: Action-Discriminative World Models for Counterfactual Model Predictive Control

Published
Source
arXiv
Paper number
1130
Field
Robotics
arXiv ID
2609.30264

Key points

  • It precisely identifies the structural problem of world models: low factual prediction error does not mean good action selection.
  • It attaches an action-recovery (inverse dynamics) auxiliary task during training only, so predictions retain action information, and removes it at test time to keep planning unchanged.
  • It improved hard-start success from 3.7% to 52.0% on OGBench-Cube, and real Franka robot pick-and-place from 42.2% to 71.1%.
  • It also showed that diagnostic metrics such as elite regret align with actual success better than plain prediction error.

Paper links

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