View source: R/GSOFunc_geomean-grad.R
geomean.grad | R Documentation |
Calculate geomean objective gradient
geomean.grad(x, spp)
x |
a list/column, e.g. run$solution, |
spp |
a data.frame, usually data or option data.frame |
Internal GSO function. Used within gso(), an input for nloptr() calculates the sum of the partial derivatives, with respect to each variable
The reformulated objective; nloptr expects a minimization problem. The geomean objective, constraints (and corresponding gradients) all take the same set of extra arguments.
returns a single value (the sum of the partial derivatives)
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