Purpose: In the current economic climate, the huge rise in the levels of debt incurred by professional football clubs challenges the need to improve their efficiency levels. Hence, analysis of their productivity is essential and represents an integral dimension to any realistic and efficient...

We consider a class of nonlinear time series expressed as a local mixture of a finite number of linear autoregressions. The mixing weights are continuous functions of lagged observations while the densities of the innovation terms in each autoregression can be very general and are only assumed...

In this article, we seek what are the factors behind a country's decision to move to Inflation Targeting. We find that high past inflation, low debt levels and the absence of a nominal exchange rate anchor increase the probability that a country will end up opting for it.

We propose and analyze a new nonlinear time series model based on local mixtures of linear regressions, referred to as experts, with thick-tailed disturbances. The mean function of each expert is an affine function of covariates that may include lags of the dependent variable and/or lags of...