Flow-JEPA: Flow Matching for Robust Latent Dynamics in JEPA World Models
- URL: http://arxiv.org/abs/2608.29029v1
- Date: Sat, 29 Aug 2026 03:40:06 GMT
- Title: Flow-JEPA: Flow Matching for Robust Latent Dynamics in JEPA World Models
- Abstract summary: Joint-Embedding Predictive Architectures (JEPAs) have shown strong potential for learning compact predictive representations.<n>We propose Flow-JEPA, a conditional flow matching dynamics model that jointly generates a sequence of future latent states conditioned on the current observation and actions.
- Score: 18.035166689862205
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Joint-Embedding Predictive Architectures (JEPAs) have shown strong potential for learning compact predictive representations, and LeWorldModel (LeWM) extends this paradigm to reconstruction-free latent world modeling from pixels. However, its deterministic autoregressive predictor generates future states through repeated one-step transitions, which can accumulate errors and remain sensitive to task-irrelevant visual perturbations. In this work, we propose Flow-JEPA (F-JEPA), a conditional flow matching dynamics model that jointly generates a sequence of future latent states conditioned on the current observation and actions. A Gaussian distribution serves as the flow source, exposing the vector field to perturbed latent trajectories as it learns to transport them toward clean future representations. This formulation retains the reconstruction-free JEPA framework while replacing point-wise transition regression with stochastic trajectory-level prediction. F-JEPA raises mean success from $86\%$ to $92\%$ under clean observations and from $67\%$ to $86\%$ under noisy conditions, suggesting that conditional flow matching provides a promising alternative to deterministic autoregressive dynamics in JEPA world models.
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