Repository for evaluation of VAST package for single and multispecies spatial delta-generalized linear mixed models (delta-GLMM). The purpose of this analysis is to evaluate differences in indices and uncertainty estimates generated by VAST and design-based estimators, for a range of species in the Bering Sea and Gulf of Alaska.
| Name | Description |
|---|---|
| Test_Parallel | Example of how to create wrapper function to run VAST models in parallel across species. |
| Test_Obs_Model | Evaluation of differences in VAST model results for example species, with different observation models. |
| Test_DesignBased_Estimator | Simple comparison of design-based and VAST model-based indices across years and species. |
| Test_Knot_Number | Script to run comparison of VAST indices with differing levels of spatial complexity, as specified by the number of "knots". |
| Test_Autoregressive | Compares influence of different autoregressive structures for VAST model parameters over time. |
| Test_DeltaModel | Script to generate stratified Delta model biomass indices, and compare with design-based estimates. |
- Thorson, J.T., and Barnett, L.A.K. In press. Comparing estimates of abundance trends and distribution shifts using single- and multispecies models of fishes and biogenic habitat. ICES J. Mar. Sci. URL
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