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PAWS: Policy-driven Agentic World Simulation

Source
arxiv.org
Author
Tiviatis Sim, Jia Hui Woon, Xinming Gao, Chen Gao, Fengbin Zhu, Zheng Huanhuan, Chua Tat Seng, Kenji Kawaguchi
Date

Context

PAWS gives financial-policy simulations a historical record against which to check their agents' behavior. The dataset connects 36 US policy episodes to dated news, actions attributed to organizations, and daily market . Each extracted action retains a link to its supporting news, allowing researchers to inspect the evidence behind a simulated response.

Its replay study also identifies a scoring problem: high overall accuracy can coexist with missed rare actions. Evaluating a policy simulation therefore requires checking which responses it reproduces and when they occur. The dataset supplies evidence for that comparison; its of actions and prices does not itself establish causation.

Key takeaways · AI-distilled
  • PAWS covers 36 verified U.S. financial and economic policy episodes, 12,727 policy-linked news records and 65,291 stakeholder actions, each linked to the news that supports it.
  • Each action carries a multi-layer event frame (interaction mode, financial-action family and subtype, semantic attributes), with entities resolved to normalized organizations and actions aligned to daily market returns for replay.
  • Case studies of the 2008 short-selling ban and 2001 decimalization recovered documented policy timelines and associated market patterns in both dense and sparse news settings.
  • A replay study found that high accuracy can mask failure to detect rare stakeholder actions, pointing to action timing and as the central challenges.
Terms in this piece · Glossary
  • context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
  • alignment — The work of making AI systems actually pursue what their builders and users intend, rather than something subtly or dangerously different.
  • grounding — Tying a model's answers to checkable sources — retrieved documents, live data, tool results — instead of letting it answer from memory alone.
  • calibration — How well a model's confidence matches reality — a calibrated model saying "90% sure" is right about 90% of the time.
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