Yule Walker Estimation: AR Model in Matlab and Python
Yule Walker estimation fits an auto-regressive model to a time series. Suppose the series is modeled as an AR(N) process. The model parameters $a_1,\dots,a_N$ can be estimated by least squares, but the equations become cumbersome as the order $N$ grows. The Yule-Walker equations are a cleaner route. They tie the AR coefficients to the autocorrelation … Read more