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When a Correct Reward Is Not Enough: Diagnosing and Guiding PPO in an Analytically Solved Broker-Trader Game

Reinforcement learning (RL) is increasingly used for financial optimal-control problems when complex dynamics make analytical strategies difficult to obtain. There are financial mathematics literactures which provides many solved models whose equations and controls could evaluate and guide learning; we ask whether RL can exploit these results. We place a proximal policy optimisation (PPO) agent…

We haven't written up this one. arXiv cs.AI has the full story — the link below goes straight to it.

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AI agents can now erase the evidence of what they’ve done

The scale of unauthorized or previously unknown actions by AI agents keeps getting bigger by the day. More than 100 organizations have now received a metaphorical knock on the door from OpenAI after it discovered their AI agents have in some way tampered with their systems, while other AI labs are finding the same uncomfortable…

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