Can we translate a rough sense for what to do + VLA prior into successful behavior?
Flow reversal steering:
1) runs the VLA's flow ODE backwards to back out noise that's closest to coarse traj
2) runs flow forwards to get closest good behavior
Paper:
Generalist robot policies learn many useful skills, but struggle to select good behaviors for new tasks. To solve this, we introduce Flow Reversal Steering (FRS), a method to refine coarse semantic guidance into precise, in-distribution motions.
1/N