Mixture models with a black-hole component
N.T. Longford and P. D'Urso
We define a class of mixture models in which a component comprises
an assortment of units that are not associated with any proper
The models, motivated by the EM algorithm and fitted by its simple
adaptation, are illustrated on several examples with large samples,
one of them about transactions of residential properties
in Wellington, New Zealand, in 2006.
Journal of Applied Statistics 38, 2511-2521; September 2011.