It is shown that price changes of the U.S. dollar-German mark exchange rates upon different delay times can be regarded as a stochastic Marcovian process. Furthermore, we show how Kramers-Moyal coefficients can be estimated from the empirical data. Finally, we present an explicit Fokker-Planck equation which models very precisely the empirical probability distributions, in particular, their non-Gaussian heavy tails.
Siti Rahmah SaniyahTasya Aulia
Kai-Chee LamNUR ATHIRAH BINTI SUIBFOO-TERNG HOESHEAU-PING WEE