Las series de tiempo tienen una gran importancia para efectuar pronósticos sobre cualquier variable, ya que se puede tomar como variable explicativa su propio pasado y no requiere el conocimiento del dato presente de otras variables explicativas, que en muchas ocasiones no se encuentra. Como...

This volume – Predicting Crisis: Five Essays on the Mathematic Prediction of Economic and Social Crises – is the first of three sets of essays. In this first set the economic and social history of the United States is shown to be a “system of movement,” i.e. a logical and mathematic...

One of the more important statistical tools for the monitoring and analysis of the economic activity evolution in the short term is the availability of estimations of the quarterly GDP components, whether the supply side or whether the demand side. The need for having this information with a...

Over the last years there has been considerable interest in the application of long memory time series models in economics using ARFIMA models. Nowadays, the most popular estimator of the difference parameter in economic applications is that proposed by Geweke and Porter-Hudak (GPH) although has...

In this paper it is analyzed if the Contabilidad Nacional Trimestral series in Spain are extremely smooth and, therefore, if they really explain about the evolution of the Spanish economy on the short term. It is shown, by use of spectral analysis, that the Spanish quarterly series have a...

In many fields of economic analysis the order of integration of some economic magnitudes is of particular interest. Among other aspects, the order of integration determines the degree of persistence of that magnitude. The rate of inflation is a very interesting example because many contradictory...

In short-term evolution analysis, the economic time series are contamined by different types of noises which need to be erased in order to extract a trend signal. In the last years there has been increasingly developed some methods to estimate unobserved components based on the assumption that...

The central piece of the New Keynesian Phillips curve is a model of price setting with nominal rigidities that implies that the dynamics of inflation is well explained by the evolution of real marginal costs. The objective of this paper is to analyze whether this model of inflation dynamics has...

We combine an estimated monetary policy rule featuring time-varying trend inflation and stochastic coefficients with a medium scale New Keynesian framework calibrated on the U.S. economy. We find the impact of variations in trend inflation on the likelihood of equilibrium determinacy to be both...

This paper analyses two well-known features of interest rates, namely their time dependence and their cyclical structure. Specifically, it focuses on the monthly Euribor rate, using monthly data from January 1994 to May 2011. Models based on fractional integration at the long run or zero...