This paper considers a flexible class of time series models generated by Gegenbauer polynomials incorporating the long memory in stochastic volatility (SV) components in order to develop the General Long Memory SV (GLMSV) model. We examine the corresponding statistical properties of this model,...

This thesis addresses the high-frequency price formation in the European Union Emissions Trading Scheme (EU ETS). In particular, it deals with high-frequency price reactions of European Union Allowances (EUAs) to scheduled macroeconomic and regulatory announcements. The work incorporates several...

We develop a Wald type test to distinguish between long memory and ESTARnonlinearity by using a directed-Wald statistic to overcome the problem of restricted parametersunder the alternative. The test is derived from two basic model specificationswhere the first is the standard model based on an...