Model Age Composition Reduction?

[hhamazaki]

The model estimates 18 age classes. Of those, 0.1, 0.5, 1.5, 3.1, 3.4 are practically zero. In my experience, this tend to lead to model instability.

[curryc2]

Good point. Model groups (stock x age) with 0 representation in agecomp (catch or esc) in a given year are fixed at zero (phase = -1). Cheers, Curry

On Oct 25, 2018, at 11:24 AM, Toshihide Hamazaki ***@***.***> wrote: The model estimates 18 age classes. Of those, 0.1, 0.5, 1.5, 3.1, 3.4 are practically zero. In my experience, this tend to lead to model instability. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#8>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AEOgsRK8yaRUELDpHScW4_-D9eTVBnQAks5uog_mgaJpZM4X68ku>.

Curry J. Cunningham, Ph.D. (907) 360.4217 Website: currycunningham.com/ Twitter: @CurryCunningham

[hhamazaki]

After talking with biologists, I am more likely to incline that many of those "minor" age classes are due to aging error, not real. Yes, this is may not be an issue when estimating single year