by Paul Christiano 664 days ago | link | parent What kind of object is $$Q$$? (I assume its not a string.) Are you directly specifying a distribution of preferences conditioned on observations? Are you specifying a distribution over observations conditioned on preferences and then using inference? I assume the second case. So given that $$Q$$ is a predictive model, why wouldn’t you also use $$Q$$ as your model for planning? What is the advantage of using two separate models? Has anyone proposed using separate models in this way? To the extent that your model $$Q$$ is bad, it seems like you are just doomed to perform badly, and the you either need to abandon the model-based approach or come up with a better model. Adding a second model $$P$$ doesn’t sound promising at face value. It may be interesting or useful to have two models in this way, but I think it’s an unusual architecture that requires some discussion.

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