arXiv AI

Lucid Dreaming for World Models: Learning to Doubt Imagination and Decide by Trust

arXiv AI
Sep 25

Dual-Frontier: When Can an Agent Trust Its World Model?

The paper introduces Dual-Frontier, a learning principle that determines when an agent should trust its world model for decision-making. It formalizes the failure-attribution problem as a counterfactual decomposition of return loss and shows that its components cannot be identified from passive interaction, even for finite-horizon planners. Dual-Frontier allows a model‑guided decision only when the predicted advantage exceeds a certified bound on decision‑relevant world‑model error; otherwise, the agent focuses on verifying the model. The authors provide theoretical guarantees, adaptive evidence reuse, and experimental validation on controlled and realistic benchmarks, demonstrating improved decision quality and reliability.

By Huatai Zhu, Qiang Chen, Ziqian Kou, Wenhao Li, Fei Wang, Yichao Cao, Xiu Su, Yi Chen
arXiv AI
Sep 4

Imagine-then-Plan: Agent Learning from Adaptive Lookahead with World Models

The paper introduces Imagine-then-Plan (ITP), a framework that lets agents learn by interacting with a learned world model to generate multi-step imagined trajectories. ITP features an adaptive lookahead mechanism that balances ultimate goals with task progress, producing richer signals about future outcomes. Experiments on various benchmarks show that ITP outperforms existing baselines, and analyses suggest the adaptive lookahead improves reasoning for complex tasks.

By Youwei Liu, Jian Wang, Hanlin Wang, Beichen Guo, Wenjie Li
arXiv Computer Vision
Aug 24

RISE: Adaptive Imagination for World Action Models

arXiv:2608.20430v1 Announce Type: new Abstract: World Action Models (WAMs) improve planning by incorporating future world evolution into action generation, yet existing methods allocate a fixed imagi...

By Hongbo Lu, Liang Yao, Chenghao He, Hao Han, Fan Liu, Wenlong Liao, Tao He, Pai Peng