Extreme value theory for a class of EGARCH processes is developed. It is shown that the EGARCH process as well as the logarithm of its conditional variance lie in the domain of attraction of the Gumbel distribution. Norming constants are obtained and it is shown that the considered processes...

In the common nonparametric regression model the problem of testing for a specific parametric form of the variance function is considered. Recently Dette and Hetzler (2008) proposed a test statistic, which is based on an empirical process of pseudo residuals. The process converges weakly to a...

This paper investigates conditional variance patterns in daily return series of stock market indices in the G-7 and 6 selected economies of Central and Eastern Europe. For this purpose, various linear and asymmetric GARCH models are employed. The analysis is conducted for Canada, France,...

O presente trabalho avaliou as características das séries de retornos, normalmenteencontradas em séries financeiras, para dados do mercado de arroz em casca ao produtordo Rio Grande do Sul. Um modelo da classe GARCH (1,1) tipo VaR foi utilizado paraobter previsões da variância condicional e...

Cattle feeding enterprises operate amid variability originating in prices and production. Thisresearch explicitly models yield risks related to cattle feeding by relating the mean and varianceof yield performance factors to observable conditioning variables. The results demonstratethat pen...

In this paper we propose a smooth transition tree model for both the conditional mean and variance of the short-term interest rate process. The estimation of such models is addressed and the asymptotic properties of the quasi-maximum likelihood estimator are derived. Model specification is also...

The article seeks to investigate the issue of interdependence that during crisis periods in the capital markets is of particular importance due to the likelihood of causing a crisis in the real economy. The research objective of the article is to identify this interdependence in volatility....

Identification of linkages among capital markets is crucial for forming policies that take into account risk associated with international financial markets in-terdependencies. Thus, the aim of the article is to analyse interdependencies among capital markets of Germany, Poland, Czech Republic...