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10 items by relevance
1 Conference paper

Choosing the observational likelihood in state-space stock assessment models

Albertsen, Christoffer Moesgaard; Nielsen, Anders; Thygesen, Uffe Høgsbro

By implementing different observational likelihoods in a state-space age-based stock assessment model, we are able to compare the goodness-of-fit and effects on estimated fishing mortallity for different model choices. Model fit is improved by estimating suitable correlations between agegroups. We

Year: 2015

Language: English

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bn ocigd eajflhpkm
2 Journal article · Preprint article

Choosing the observational likelihood in state-space stock assessment models

Albertsen, Christoffer Moesgaard; Nielsen, Anders; Thygesen, Uffe Høgsbro

Canadian Journal of Fisheries and Aquatic Sciences — 2017, Volume 74, Issue 5, pp. 779-789

a priori. By implementing several observational likelihoods, modelling both numbers- and proportions-at-age, in an age based state-space stock assessment model, we compare the model fit for each choice of likelihood along with the implications for spawning stock biomass and average fishing mortality. We

Year: 2017

Language: English

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gfmjilchn aeod pbk

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