FB4-TMB-Shared

<p>Internal helper functions shared by the TMB-based MLE and hierarchical
fitting strategies. Covers TMB objective validation
(<code>validate_tmb_objective</code>), DLL availability checks
(<code>check_tmb_compilation</code>), robust multi-start optimization
(<code>run_robust_optimization</code>), parameter extraction from sdreport
summaries (<code>sdr_pull_est</code>, <code>sdr_pull_se</code>, <code>sdr_pull_vec</code>,
<code>sdr_assign_scalars</code>), and result assembly for basic and hierarchical
models (<code>extract_tmb_results</code>).</p>

An implementation of the 'Fish Bioenergetics 4.0' framework
described in Deslauriers et al. (2017)
<doi:10.1080/03632415.2017.1377558>. Provides automated parameter
optimization, multi-prey diet modeling, and comprehensive energy budget
simulations for fisheries research and aquaculture applications. An
optional 'TMB' (Template Model Builder) backend delivers 10-50x speedup
in maximum likelihood estimation while maintaining full backward
compatibility. Includes species-specific parameter databases and tools
for modeling fish growth, consumption, and metabolism under varying
environmental conditions.

Hans Ttito

FB4-TMB-Shared: FB4 TMB Shared Functions

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