This page contains background Gauss Procedures that are called by the estimation programs.
HPFILT.SET computes the Hodrick-Prescott filter for a univariate time series.
AMOEBA.SET. Nelder-Mead simplex algorithm for finding the minimum of a function. Translated from Numerical Recipes.
NRMIN.SET. Bo Honore and Ekaterini Kyriazidou’s Gauss translation of several very useful optimization routines from Numerical Recipes. This procedure contains the methods of Broyden-Fletcher-Goldfarb-Shanno, Powell, and Davidon-Fletcher-Powell.
AUTOLAG.SET. Computes an estimate of the spectral density matrix of a vector of orthogonality conditions at frequency 0 using the method of Newey and West (Econometrica1987) using their automatic lag selection procedure (Review of Economic Studies1994).
CORRELGM.SET. Computes the correlegram of a stationary time series.