commfish / AlaskaHerring

Age-structured Assessment Model for Alaska Herring Stocks
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Update HER with 2018 data #5

Closed jysullivan closed 5 years ago

jysullivan commented 5 years ago
jysullivan commented 5 years ago

Notes on updating egg deposition variance (assumed log se in model):

Get egg dep bootstrap variance estimation excel worksheet. Every year we estimate the variance for the most recent data year, but we also re-estimate those prior to 1991 since those are based on a projection from 1991-current variances. After calculating the CV (sd/mu), I copied in 1978-2018 into sitka.dat file. Note that for LS, the likelihood weight in ctl file = 1/(sd^2), so you can also derive CV from LS weights, sd = 1/ sqrt(1/weight).