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Diffuser: trajectory denoising as guided planning

Contribution grade

Diffusion-based planning · Human-designed research method or resource

Reference score130,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

Learned a diffusion prior over state/action trajectories, guided reverse denoising with reward gradients or clamped constraints and executed sampled plans in a receding-horizon loop.

Scientific scope

Learned a diffusion prior over state/action trajectories, guided reverse denoising with reward gradients or clamped constraints and executed sampled plans in a receding-horizon loop. Guided conditional sampling is approximate and does not certify feasible or globally optimal plans. Variable-length convolutional horizons do not remove planning cost or guarantee arbitrary-horizon quality. Distinct from a diffusion single-action policy or later imitation-only robotics systems.

Evidence

The linked original sources describe the stated contribution and its evidence limits. WRS has not independently rerun the experiments or certified a proof. Guided conditional sampling is approximate and does not certify feasible or globally optimal plans. Variable-length convolutional horizons do not remove planning cost or guarantee arbitrary-horizon quality. Distinct from a diffusion single-action policy or later imitation-only robotics systems.

Contributors

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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