Persistent memory and generalization shape world-model research

PPMem proposes compact explicit plane primitives for persistent scene memory and reports improved quality and coherence across long viewpoint changes. AnyGoal probes generalization beyond expert rollouts, finding vulnerability when familiar states and actions are recombined in underrepresented ways; MorphAct also reports context-dependent policy-update gains across simulated and real-world robotics. Evaluation scale, robustness, and reproducibility remain open.