Modality for Reinforcement Learning

Modality for Reinforcement Learning

Definitions, Dissertation, Research
In this post, I define modality within the context of a reinforcement learning agent.  As a neurophysiological concept, sensory modalities are fairly intuitive.  Hearing and vision are a typical example of two different sensory modalities.  Motor modalities are a little less intuitive, but not difficult to understand.  A motor modality may simply be any particular pattern of activated motor neurons during a movement. But, when talking about this in terms of a Reinforcement Learning agent, we have to talk about it in the appropriate formalism.  This formalism for a reinforcement learning agent is the Markov Decision Process.  In an MDP, the analogues for sensors and motors are within the definition of states and actions. In a MDP, states and actions are typically defined as vectors and the components of the vectors are called variables or features.  I will use the…
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