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abstract indexed · arXiv 2610.18677 · updated 2026-10-18

Model-Based Online Decision Making via Generative Trajectory Planning

First page of Model-Based Online Decision Making via Generative Trajectory Planning
From the original paper · arXiv 2610.18677Page 1. Select the image to read the PDF.

GTP replaces from-scratch trajectory optimization at every decision step by sampling action sequences from a learned diffusion prior and refining them with learned dynamics, reward, and value models. The cost is training and maintaining four learned components (diffusion proposal, dynamics, reward, value) plus sampling-and-refinement overhead at inference, which exceeds the compute profile of a single policy forward pass. Failure modes include compounding model error in the learned dynamics over long horizons, proposal distribution mismatch when deployment states drift from training data, and degradation in environments where reward or dynamics are hard to model accurately.

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recommendation
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research area
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technical change
Generative trajectory planning with diffusion priors
published
2026-10-13

This is model-based reinforcement learning for continuous control and robotic manipulation, not LLM inference or agent-system efficiency, so it falls outside the production scope of an AI/ML engineer deploying language models on constrained infrastructure.

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  1. claim 01Paperraft inference
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    GTP replaces from-scratch trajectory optimization at every decision step by sampling action sequences from a learned diffusion prior and refining them with learned dynamics, reward, and value models. The cost is training and maintaining four learned components (diffusion proposal, dynamics, reward, value) plus sampling-and-refinement overhead at inference, which exceeds the compute profile of a single policy forward pass. Failure modes include compounding model error in the learned dynamics over long horizons, proposal distribution mismatch when deployment states drift from training data, and degradation in environments where reward or dynamics are hard to model accurately.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

    Inspect the source
  2. claim 02Paperraft inference

    Matches or exceeds state-of-the-art model-free, diffusion-policy, and model-based baselines on continuous control and long-horizon manipulation tasks, with no quantified improvement factor reported in the abstract.

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quality

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arXiv 2610.18677

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