Tools and approaches are provided for nonlinear time series modelling in econometrics. A wide range of topics is covered, including probabilistic properties, statistical inference and computational methods. The focus is on the applications but the ideas of the mathematical arguments are also...

GARCH (1,1) models are widely used for modelling processes with time varying volatility. These include financial time series, which can be particularly heavy tailed. In this paper, we propose a log-transform-based least squares estimator (LSE) for the GARCH (1,1) model. The asymptotic properties...

We analyse the impact of business incentives on the technical efficiency of Italian manufacturing firms. Using DEA allows a novel treatment of the omitted-variable and sample-selection bias. Through DEA one carries out direct comparisons between similar observations akin to those carried out in...