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HaM-World model enhances AI planning with selective memory and Hamiltonian dynamics

Researchers have introduced HaM-World, a novel structured world model designed to improve the stability and accuracy of planning in reinforcement learning. This model decomposes latent states into canonical (q, p) and context (c) subspaces, incorporating Mamba selective state-space memory to handle history-conditioned inputs. HaM-World utilizes a soft-Hamiltonian vector field for dynamics prediction, demonstrating superior performance on DeepMind Control Suite tasks and enhanced robustness against out-of-distribution perturbations. AI

Summary written by gemini-2.5-flash-lite from 1 source. How we write summaries →

IMPACT Introduces a more stable and robust world model for planning, potentially improving agent performance in complex and dynamic environments.

RANK_REASON This is a research paper detailing a new model architecture for planning in reinforcement learning. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

COVERAGE [1]

  1. arXiv cs.AI TIER_1 · Haoyun Tang, Haodong Cui, Keyao Xu, Kun Wang, Zhandong Mei ·

    HaM-World: Soft-Hamiltonian World Models with Selective Memory for Planning

    arXiv:2605.05951v1 Announce Type: new Abstract: World models enable model-based planning through learned latent dynamics, but imagined rollouts become unstable as the planning horizon grows or the dynamics distribution shifts. We argue that this instability reflects two missing s…