This paper presents likelihood analysis of the I(2) cointegrated vector autoregression with piecewise linear deterministic terms. Limiting behavior of the maximum likelihood estimators are derived, which is used to further derive the limiting distribution of the likelihood ratio statistic for...

Asymptotic properties of the quasi-maximum likelihood estimator (QMLE) for general ARCH(q) models - including for example Power ARCH and log-ARCH - are derived. Strong consistency is established under the assumptions that the ARCH process is geometrically ergodic, the conditional variance...