Showing 1 - 10 of 56
We propose a discussion index model (Stock and Watson, 2002) to fore- cast electricity demand for one hour to one week ahead. The model is particularly useful as it captures complicated seasonal patterns in the data. The forecast performance of the proposed method is illustrated with a simulated...
Persistent link: https://www.econbiz.de/10010837726
This study examines the conditional volatility and correlation dependency and interdependency for the four major … volatility. These results have become more pervasive when the exchange rate and FFR are included. Monetary policy also has a …
Persistent link: https://www.econbiz.de/10010732605
realized volatility models, not confusing thresholds, asymmetry and leverage, not underestimating the complexity of … multivariate volatility models, and thinking carefully about forecasting models and expertise …
Persistent link: https://www.econbiz.de/10010837984
We consider the problem of testing for seasonal unit roots in monthly panel data. To this aim, we generalize the quarterly CHEGY test to the monthly case. This parametric test is contrasted with a new nonparametric test, which is the panel counterpart to the univariate RURS test that relies on...
Persistent link: https://www.econbiz.de/10010837807
This paper develops a new test, the trinomial test, for pairwise ordinal data samples to improve the power of the sign test by modifying its treatment of zero di®erences between observations, thereby increasing the use of sample information. Simulations demonstrate the power superiority of the...
Persistent link: https://www.econbiz.de/10010837929
In this paper we investigate the properties of the Lagrange Multiplier (LM) test for autoregressive conditional heteroskedasticity (ARCH) and generalized ARCH (GARCH) in the presence of additive outliers (AO's). We show analytically that both the asymptotic size and power are adversely affected...
Persistent link: https://www.econbiz.de/10010837947
In this paper we propose a Bayesian analysis of seasonal unit roots in quarterly observed time series. Seasonal unit root processes are useful to describe economic series with changing seasonal fluctuations. A natural alternative model for similar purposes contains deterministic seasonal mean...
Persistent link: https://www.econbiz.de/10010731564
We consider tests for sudden changes in the unconditional volatility of conditionally heteroskedastic time series based … the correct null hypothesis of no volatility change is rejected much too frequently. Applying the tests to standardized … designed to test sequentially for the presence of multiple changes in volatility. An application to emerging markets stock …
Persistent link: https://www.econbiz.de/10010731577
This paper develops a new test, the trinomial test, for pairwise ordinal data samples to improve the power of the sign test by modifying its treatment of zero differences between observations, thereby increasing the use of sample information. Simulations demonstrate the power superiority of the...
Persistent link: https://www.econbiz.de/10010731611
In applied economic research computable general equilibrium [CGE] models in which the behavior of economic agents are modeled, are widely used. In many CGE models, the Linear Expenditure System [LES] is used to model behavior of the household sector. The disadvantage of LES is that the Engel...
Persistent link: https://www.econbiz.de/10010731621