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Let users pass in an nlopt algorithm to the TuneConfig. #58

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Oct 30, 2018
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Let users pass in an nlopt algorithm to the TuneConfig. #58

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6 changes: 3 additions & 3 deletions albatross/tune.h
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Original file line number Diff line number Diff line change
Expand Up @@ -66,14 +66,14 @@ template <class FeatureType> struct TuneModelConfig {
set_default_optimizer();
};

void set_default_optimizer() {
void
set_default_optimizer(const nlopt::algorithm &algorithm = nlopt::LN_PRAXIS) {
// The various algorithms in nlopt are coded by the first two characters.
// In this case LN stands for local, gradient free.
auto m = model_creator();

auto tunable_params = m->get_tunable_parameters();
optimizer =
nlopt::opt(nlopt::LN_PRAXIS, (unsigned)tunable_params.values.size());
optimizer = nlopt::opt(algorithm, (unsigned)tunable_params.values.size());
optimizer.set_ftol_abs(1e-8);
optimizer.set_ftol_rel(1e-6);
optimizer.set_lower_bounds(tunable_params.lower_bounds);
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