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Food price volatility has re-emerged as an important topic of political discussion since the food price crisis of 2007 …/08. Not only the observation of increasing price levels but also their apparent increased volatility on key markets (most …
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A class of semiparametric fractional autoregressive GARCH models (SEMIFAR-GARCH), which includes deterministic trends, difference stationarity and stationarity with short-and long-range dependence, and heteroskedastic model errors, is very powerful for modelling financial time series. This paper...
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