In this paper, we introduce a new approach for volatility modeling in discrete and continuous time.

Commonly used linear-quadratic solution methods to nonlinear models are described in detail using a closed economy real business cycle model as an illustration. We find that all method yield identical coefficients on optimal decision rules. Some methods are easier to use in economies where...

In this paper we obtain bounds under weaker nonparametric assumptions and explore how the bounds with assumptions imposed.

In this paper we analyse the problem of the modelling of individual transitions in presence of an incomplete sampling scheme.

The paper deals with estimation of missing observations in possibly nonstationary ARIMA models. First, the model is assumed known, and the structure of the interpolation filter is analysed. Using the inverse or dual autocorrelation function it is seen how estimation of a missing observation is...

The paper deals with estimation of missing observations in possibly nonstationary ARIMA models. First, the model is assumed known, and the structure of the interpolation filter is analysed. Using the inverse or dual autocorrelation function it is seen how estimation of a missing observation is...