Showing 1 - 10 of 137
information in large sets of variables in vector autoregressive (VAR) models. This can be done by aggregating the variables or by … reducing the parameter space to a manageable dimension. Factor models reduce the space of variables whereas large Bayesian VAR …
Persistent link: https://www.econbiz.de/10010734524
High-dimensional regression problems which reveal dynamic behavior are typically analyzed by time propagation of a few number of factors. The inference on the whole system is then based on the low-dimensional time series analysis. Such highdimensional problems occur frequently in many different...
Persistent link: https://www.econbiz.de/10005677954
The paper proposes a data driven adaptive model selection strategy. The selection crite- rion measures economic ex–ante forecasting content by means of trading implied cash flows. Empirical evidence suggests that the proposed strategy is neither exposed to selection bias nor to the risk of...
Persistent link: https://www.econbiz.de/10005489961
Common approaches to test for the economic value of directional forecasts are based on the classical Chi-square test for independence, Fisher’s exact test or the Pesaran and Timmerman (1992) test for market timing. These tests are asymptotically valid for serially independent observations....
Persistent link: https://www.econbiz.de/10005652761
This paper investigates the finite sample properties of confidence intervals for structural vector error correction models (SVECMs) with long-run identifying restrictions on the impulse response functions. The simulation study compares methods that are frequently used in applied SVECM studies...
Persistent link: https://www.econbiz.de/10005677903
Empirical studies have shown that a large number of financial asset returns exhibit fat tails and are often characterized by volatility clustering and asymmetry. Also revealed as a stylized fact is Long memory or long range dependence in market volatility, with significant impact on pricing and...
Persistent link: https://www.econbiz.de/10005678005
(VAR) models. In advance, a principal components analysis (PCA) is adopted to reduce the dimensionality of the term … alternative implementations of the PCA/VAR model. This approach is shown to outperform forecasting schemes relying on global …
Persistent link: https://www.econbiz.de/10005678035
We propose a general class of Markov-switching-ARFIMA processes in order to combine strands of long memory and Markov-switching literature. Although the coverage of this class of models is broad, we show that these models can be easily estimated with the DLV algorithm proposed. This algorithm...
Persistent link: https://www.econbiz.de/10005678044
The volatility implied by observed market prices as a function of the strike and time to maturity form an Implied Volatility Surface (IV S). Practical applications require reducing the dimension and characterize its dynamics through a small number of factors. Such dimension reduction is...
Persistent link: https://www.econbiz.de/10005678046
We present a new way to model age-specific demographic variables with the example of age-specific mortality in the U.S., building on the Lee-Carter approach and extending it in several dimensions. We incorporate covariates and model their dynamics jointly with the latent variables underlying...
Persistent link: https://www.econbiz.de/10005784846