void reweight(Weight& wt, Util::Random01& rng) const {
double cost = wt.getValue();
double newcost = cost;
maybeSet(newcost);
if (!weights.empty()) {
if (!IsFeatureWeight<Weight>::value)
SDL_THROW_LOG(Hypergraph.Reweight, ConfigException,
"supplied (unusable) feature weights for non-feature hypergraph");
double weighted = FeatureDotProduct<Weight, double>::dotProduct(wt, weights);
if (weightsAdd)
newcost += weighted;
else
newcost = weighted;
}
postSet(newcost, rng);
if (clearFeatures)
wt = Weight((typename Weight::FloatT)newcost);
else
wt.value_ = newcost;
}
bool trivial() const {
return is_null(set) && is_null(random_add) && is_null(add) && is_null(scale) && !clearFeatures
&& !fsm_normalize && !head_normalize && weights.empty();
}