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Karl Friston on the Perils of Investigations into Consciousness, Derealization, and the Free Energy Principle
Theories of Everything with Curt Jaimungal
Introduction of Variational Free Energy in Solving Intractable Integration Problem
The introduction of variational free energy was a clever move in solving the intractable integration problem. It converted the intractable problem into a tractable optimization problem, making it a computable object that can be evaluated given some data and a genetic model. The variational free energy serves as a bound on the marginal likelihood, making it a good approximation to the desired result, the marginal likelihood, when optimized under the assumption that the bound is high.
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