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b'Today we\\u2019re joined by Jason Gauci, a Software Engineering Manager at Facebook AI.\\n In our conversation with Jason, we explore their Reinforcement Learning platform, Re-Agent (Horizon). We discuss the role of decision making and game theory in the platform and the types of decisions they\\u2019re using Re-Agent to make, from ranking and recommendations to their eCommerce marketplace.\\n Jason also walks us through the differences between online/offline and on/off policy model training, and where Re-Agent sits in this spectrum. Finally, we discuss the concept of counterfactual causality, and how they ensure safety in the results of their models.\\n The complete show notes for this episode can be found at twimlai.com/go/448.'