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Neuroinform (2013) 11:259–261 DOI 10.1007/s12021-012-9172-z NEWS ITEM A Complete Serial Compound Temporal Difference Simulator for Compound stimuli, Configural cues and Context representation Esther Mondragón & Jonathan Gray & Eduardo Alonso Published online: 18 November 2012 # Springer Science+Business Media New York 2012 1 5 Temporal Difference (TD) (Sutton and Barto, 1987 )isa graphical interface of the R&W Simulator significantly real-time error correction model in which learning is modified to introduce temporal parameters and constraints. computed according to the difference between successive CSC TD assumes that a stimulus can be broken down predictions and a discount factor that decays exponential- into a series of individual elements, which are each active ly, reflecting the fact that predictors closer to a reinforcer for a single unit of time as shown Fig. 1, left. (the unconditioned stimulus, US) are based on more Each of these new elements has a separate eligibility trace recent information and thus more accurate. In addition, and associative strength, receives distinct reinforcement an eligibility trace modulates the extent to which the from the US, and while active contributes to the prediction stimulus predictive value is susceptible of changing on any term. In essence CSC TD treats the components of
Neuroinformatics – Springer Journals
Published: Nov 18, 2012
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