Get default initial parameter values — get

Get a list of default initial parameter values for the stock assessment model.

Usage

get_parameters(data)

data: A list containing the data inputs for the model, including fishery-specific information, selectivity change years, and time series data.

A named list of initial parameter values containing:

par_log_B0: Numeric. Log-scale unfished biomass.
par_log_psi: Numeric. Log-scale psi parameter.
par_log_m0, par_log_m4, par_log_m10, par_log_m30: Numeric. Log-scale natural mortality at ages 0, 4, 10, and 30.
par_log_h: Numeric. Log-scale steepness parameter.
par_log_sigma_r: Numeric. Log-scale recruitment standard deviation.
par_log_cpue_q, par_cpue_creep: Numeric. CPUE catchability coefficient and creep parameter.
par_log_cpue_sigma, par_log_cpue_omega: Numeric. Log-scale CPUE observation error parameters.
par_log_aerial_tau: Numeric. Log-scale aerial survey precision.
par_log_aerial_sel: Numeric vector (length 2). Log-scale aerial selectivity parameters.
par_log_troll_tau: Numeric. Log-scale troll survey precision.
par_log_gt_q, par_log_hsp_q: Numeric. Log-scale catchability for gillnet and harpoon surveys.
par_log_tag_H_factor: Numeric. Log-scale tagging mortality factor.
par_log_af_alpha: Numeric vector (length 2). Log-scale age-frequency alpha parameters.
par_log_lf_alpha: Numeric vector (length 5). Log-scale length-frequency alpha parameters.
par_sel_rho_y, par_sel_rho_a: Numeric vectors (length 7). Selectivity temporal and age correlation parameters.
par_log_sel_sigma: Numeric vector (length 7). Log-scale selectivity standard deviations.
par_log_sel_1 through par_log_sel_7: Arrays. Log-scale selectivity by year and age for each fishery.
par_rdev_y: Numeric vector. Annual recruitment deviations.