Parametric Estimation Parametric (single global model) Advantage: It reduces the problem of estimating a probability density function (pdf), discriminant, or regression function to estimating the values of a small number of parameters. Disadvantage: This assumption does not always hold and we may incur a large error if it does not. Semiparametric (small number of local models) Mixture model (Chap 7) The density is written as a disjunction of a small number of parametric models. 3
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