In recent monetary history, central banks around the world have started to introduce unconventional monetary policy measures, such as extending or restructuring the asset side of their balance sheet. The origin of these monetary policy tools goes back to an intervention by the U.S. Federal...

The Polynomial Chaos Expansion (PCE) technique recovers a finite second order random variable exploiting suitable linear combinations of orthogonal polynomials which are functions of a given stochastic quantity $\xi$, hence acting as a kind of random basis. The PCE methodology has been developed...

We use post-war quarterly data from Belgium, Canada, France, Germany, Greece, Ireland, Japan, theNetherlands, the United Kingdom, and the United States to examine the Fisherian link between inflation and the short-term nominal interest rates.

Previous studies show that the standard univariate unit root tests cannot reject the hypothesis that interest rates follow integrated processes. In this paper, we pool interest rate data of twelve OECD countries and implement a multivariate test. It is found that the unit root hypothesis can be...

In this paper, address the problem of testing persistent causality between integrated, possibly cointegrated, time series.

In order to obtain exact distributional results without imposing restrictive parametric assumptions, various rank counterparts of the Dickey-Fuller statistic are considered. In particular, a rank counterpart of the score statistic is suggested which appears to have attractive theoretical...

In this paper we address the issue of the efficient estimation of the cointegrating vector in linear regression models with variables that follow general (higher order and fractionally) integrated processes.

A key application of long memory time series models concerns inflation. Long memory implies that shocks have a long-lasting effect. It may however be that empirical evidence for long memory is caused by neglecting one or more level shifts. Since such level shifts are not unlikely for inflation,...