HazardWeaver: Scientific Route Selection for Hazard Analysis Agents
Natural hazard analysis requires choosing scientific methods that are both appropriate for an event and executable with available data and tools, and those choices may need revising as evidence emerges. HazardWeaver frames this as state-dependent route selection. A Hazard Knowledge Compiler extracts applicability conditions, a Hazard Capability Graph checks input–output compatibility between executable capabilities, and an agent selects, runs, and revises workflows. Evaluated on a 141-instance benchmark spanning seven hazards and four multi-hazard interaction classes, it outperforms existing agents, especially with multiple valid routes.
Authors: Wangshu Zhu, Xueqi Cheng, Liang Wu, Yushun Dong
Paper: https://arxiv.org/abs/2610.03591v1
7 Oct 2026
When a Correct Reward Is Not Enough: Diagnosing and Guiding PPO in an Analytically Solved Broker-Trader Game
Reinforcement learning is increasingly applied to financial control, so this paper uses an analytically solved continuous-time broker–trader game to diagnose PPO. A PPO agent replaces the broker and sets trading speed. With no uninformed flow it approaches the reference action, but with stochastic flow, PPO–FFNN and PPO–LSTM remain inaccurate even though supervised learning shows the actors can represent the right action. Critics fail to rank nearby actions, and reward shaping doesn't help. Using the analytical policy as a starting point for adapting to changed costs does give improvement.
Authors: Siu Tung Wong, Carlo Campajola
Paper: https://arxiv.org/abs/2610.03598v1
7 Oct 2026
Low-Cost Video-Time Priors as a Strong Baseline for EEG-fNIRS Emotion Regression on Familiar Videos
Continuous emotion regression estimates a viewer's moment-to-moment valence and arousal while watching video. For familiar videos, the authors find that a simple prior based on which video is playing and the time within it is a strong, low-cost baseline. In subject-held-out tests it came within 0.05 MAE of EEG-fNIRS fusion on the internal evaluation and within 0.32 on the external one. Gains from the brain signals were smaller and varied across participants and videos.
Authors: Minghao Kong, Jiurun Chen, Ying Gao, Xiangbin Meng, Rongjie Wang
Paper: https://arxiv.org/abs/2610.03618v1
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