Data/hora: 12/06/2024 16:58:51

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Calibration du recrutement par plusieurs indices d'abondance. Maximum de vraisemblance. Incorporation d'une distribution a priori	
Autores: 	Laurec, A.; Souplet, Arnauld.	
Data: 	1987	
Ano: 	1987	
Resumo: 	Following HARDING (1984-) maximum likelihood techniques are used to estimate recruitment through abundance indices. The first new point in this paper corresponds to the possible use of the historical average recruitment as a shrinkage pole. Under specific assumptions this can lead to the usual regression line where on past data recruitment is explained by the abundance index (e.g. I.Y.F.S.). The second point is related to the possibility of taking into account several abundance indices, corresponding for example to several fleets or research vessels. A maximum likelihood multicalibration technique is suggested. It corresponds to a software which has been implemented in ICES head quarter. Previous comparisons (Method Working Group, 1987) suggests that on real data such a mu! ticalibration could perform less efficiently than the weighted mean method developped by SHEPHERD ( 1987). Somne theoretical considerations are developped that could explain the discrepancies between the two approaches.	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/00398/50907/51681.pdf

http://archimer.ifremer.fr/doc/00398/50907/	
Formato: 	application/pdf	
Fonte: 	1987, Conseil International pour l'Exploration de la Mer

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