SPslope:
Slope in surplus production MP
Description
A management procedure that makes incremental adjustments to TAC recommendations based on the apparent trend in recent surplus production. Based on the theory of Mark Maunder (IATTC)
Usage
SPslope(x, DLM_data, reps = 100, yrsmth = 4, alp = c(0.9, 1.1), bet = c(1.5, 0.9))
Arguments
x
A position in data-limited methods data object
DLM_data
A data-limited methods data object
reps
The number of quota samples
yrsmth
Years over which to smooth recent estimates of surplus production
alp
Condition for modifying the DLM_data (bounds on change in abundance)
bet
Limits for how much the DLM_data can change among years
Value
A numeric vector of DLM_data recommendations
Details
Note that this isn't exactly what Mark has previously suggested and is stochastic in this implementation.
References
http://www.iattc.org/Meetings/Meetings2014/MAYSAC/PDFs/SAC-05-10b-Management-Strategy-Evaluation.pdf