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How to solve "Invalid input argument type or size such as observation, reward, isdone or loggedSignals." error? (Reinforcement Learning Toolbox)

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I did an implementation of the 2D Bin Packing Problem using the Reinforcement Toolbox, where i defined my environment and agent. When I try to train my agent I get the error "Invalid input argument type or size such as observation, reward, isdone or loggedSignals.". I checked the output variables of my step function and it seems, that they have valid values. When i manually give the Actions to my environment, it gives the expected output and proceeds without problem. So I guess there is a problem with the agent (Neural Network)? Attached you can find a .zip file containing all the functions needed. The script is the environment.m.

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Drew Davis
Drew Davis 2019년 7월 23일
In your reset function and step function change:
LoggedSignal.State = {[Blocks];[Bintable]};
to
LoggedSignal.State = {[Blocks],[Bintable]};
The vertical cell array isn't concatenating nicely with another cell array as part of training.
Hope this helps
Drew

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