The impossibility of estimating a negative binomial clustering parameter from presence-absence data: a comment on He and Gaston.
Am Nat
; 170(4): 651-4; discussion 655-9, 2007 Oct.
Article
em En
| MEDLINE
| ID: mdl-17891743
ABSTRACT
An important problem is to infer the abundance of a species in an area from its presence or absence in the cells of a uniform grid. If the abundance is assumed to be distributed over cells according to a negative binomial model, a value of the clustering parameter k is needed to infer the abundance. It is shown that, despite a proposal in the literature, k cannot be estimated from presence-absence data but must be given from outside information.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Modelos Estatísticos
Tipo de estudo:
Risk_factors_studies
Idioma:
En
Revista:
Am Nat
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Estados Unidos