Model Validation The goal of the model validation process is to find out whether the model O Agrees sufficiently with the observed data ●Describes the“true”signal generation system But how to validate the model? Key idea:Check whether the residual process,which is generated by the inverse of the fitted model,is a realization of white noise. 1010 The goal of the model validation process is to find out whether the model ● Agrees sufficiently with the observed data ● Describes the “true” signal generation system But how to validate the model? Key idea: Check whether the residual process, which is generated by the inverse of the fitted model, is a realization of white noise. Model Validation