ASPIC biomass dynamic model extends biodyn
The major changes in ASPIC will be:
- Estimation by MLE (or concentrated likelihood), rather than SSE. Gives the same answers, but better for AIC, etc.
- Estimation by penalized likelihood (MAP, maximum a posteriori = ML with priors) if desired.
- Fully tested and supported annual CVs on CPUE.
- INP file rationalized and consolidated; may contain comment lines starting with # (sample attached, but format may change).
- Explicit bounds on catchability coefficients.
- Input guesses for MSY and Fmsy, instead of MSY and K.
- A few rarely used options (e.g., IRLS) will not be available in the new version.