Learning Invariant Visual Representations for Planning with Joint-Embedding Predictive World Models
TLDR
Improves latent predictive world model robustness by adding bisimulation encoder to ignore slow features, tested on navigation with distractors.
Reasoning
The paper identifies a real limitation of JEPA models and proposes a principled solution using bisimulation. However, evaluation is limited to a simple navigation task with synthetic distractors, lacking real-world or complex benchmarks.
Read-first score
Read-first score 60.5, weighted from topical fit, citation, graph, method, reproducibility, and recency signals. Original total remains 38.
Field roles
Rank sensitivity
Stability: volatile; rank range: 337.
Keyword Scores
Deep Analysis
Innovations
- Augmenting the predictive objective of joint-embedding predictive world models with a bisimulation encoder to enforce control-relevant state equivalence
- Reducing latent space size up to 10x compared to DINO-WM while maintaining robustness to slow features
- Demonstrating agnosticism to the choice of pretrained visual encoder (DINOv2, SimDINOv2, iBOT)
Methodology
The model extends a joint-embedding predictive architecture (JEPA) by incorporating a bisimulation encoder that maps states with similar transition dynamics to nearby latent representations, thereby suppressing slow features like background changes and distractors. It is evaluated on a simple navigation task under test-time background variations and visual distractors, with comparisons to the DINO-WM baseline.
Key Results
Across all benchmarks, the proposed model consistently improves robustness to slow features while operating in a latent space up to 10x smaller than that of DINO-WM.
Limitations
- Evaluation is limited to a simple navigation task, leaving generalization to more complex environments unverified
- The abstract does not discuss potential failure cases or sensitivity to hyperparameters of the bisimulation encoder
- Robustness is only tested under specific types of background changes and distractors; broader or more extreme variations are not explored