Showing 1 - 10 of 51
The stochastic resonance (SR) is studied in an overdamped linear system driven by multiplicative and additive noise when the additive noise is a linear combination of an asymmetric dichotomous noise and its square. The exact expressions are obtained for the first two moments and the correlation...
Persistent link: https://www.econbiz.de/10010873389
A general method is presented to explicitly compute autocovariance functions for non-Poisson dichotomous noise based on renewal theory. The method is specialized to a random telegraph signal of Mittag-Leffler type. Analytical predictions are compared to Monte Carlo simulations. Non-Poisson...
Persistent link: https://www.econbiz.de/10010873197
The stochastic resonance (SR) in a stochastic stable system driven by a static force and a periodic square-wave signal as well as by additive white noise and dichotomous noise is considered from the point of view of the signal-to-noise ratio (SNR). It is found that the SNR exhibits SR behavior...
Persistent link: https://www.econbiz.de/10010591395
Most macroeconomic data is continuously revised as additional information becomes available. We suggest that revisions of data is an increasingly important source of uncertainty about the state of the economy and offer an alternative channel of uncertainty - data uncertainty. This paper adds on...
Persistent link: https://www.econbiz.de/10011341024
The paper evaluates the quality of the German national accounting data (GDP and its use-side components) as measured by the magnitude and dispersion of the forecast/revision errors. It is demonstrated that government consumption series are the least reliable, whereas real GDP and real private...
Persistent link: https://www.econbiz.de/10010324268
Die vorliegende Bewertung der Treffgenauigkeit von Prognosen sowie von vorläufigen amtlichen Berechnungen zur wirtschaftlichen Entwicklung in Deutschland zeigt, dass frühe Prognosen nicht nur sehr ungenau sind, sondern auch systematisch zu optimistisch ausfallen. Die mehr als ein Jahr im...
Persistent link: https://www.econbiz.de/10011601977
We propose an imperfect information model for the expectations of macroeconomic forecasters that explains differences in average disagreement levels across forecasters by means of cross sectional heterogeneity in the variance of private noise signals. We show that the forecaster-specific...
Persistent link: https://www.econbiz.de/10011688277
We propose a new class of state space models for longitudinal discrete response data where the observation equation is specified in an additive form involving both deterministic and random linear predictors. These models allow us to explicitly address the effects of trend, seasonal or other...
Persistent link: https://www.econbiz.de/10010266157
Most macroeconomic data is continuously revised as additional information becomes available. We suggest that revisions of data is an important source of uncertainty about the state of the economy. This paper evaluates the quality of major real macroeconomic Euro area variables, published by...
Persistent link: https://www.econbiz.de/10010420867
The paper evaluates the quality of the German national accounting data (GDP and its use-side components) as measured by the magnitude and dispersion of the forecast/revision errors. It is demonstrated that government consumption series are the least reliable, whereas real GDP and real private...
Persistent link: https://www.econbiz.de/10010285824