Before revision:  We propose sieve estimators of the eigenvalue-eigenfunction pair which are used to decompose the SDF into its permanent and transitory components , as well as estimators of the long-run yield and the entropy of the permanent component of the SDF, allowing for a wide variety of empirically relevant setups.
After revision:  We propose sieve estimators of the eigenvalue-eigenfunction pair which are used to decompose the SDF into its permanent and transitory components of the SDF process and (2) estimate the yield and the entropy of the permanent component of the SDF, allowing for a wide variety of empirically relevant setups.