Statistical Modelling 8 (2008), 67–80
On a partially specified Bayesian nonparametric model for earthquakes
occurrences
Fabrizio Ruggeri
CNR IMATI,
Via Bassini 15,
I–2013 Milano,
eMail:
fabrizio@mi.imati.cnr.it
Abstract:
We consider the case of a bivariate Dirichlet process model in which
the parameter is known only through its marginal distributions. A Fréchet
class on the parameter is therefore entertained and, consequently, a class
of Dirichlet processes is obtained. We analyze the notion of robustness in
such environment and introduce some measures of robustness. The ideas are
finally illustrated in an example about earthquakes occurrences.
Keywords:
concordance; Dirichlet process; Fréchet class
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