ABSTRACT
Chapter 19 considered nonlinear models with E(y|X,β) = µ(Xi, φ), where µ is a prespecified parametric nonlinear function of the predictors with unknown parameters φ. In this and the following chapters we consider models where µ is also a priori unknown. In later chapters we consider more flexible approaches that also allow the residual density to be unknown and potentially changing with predictors.
