AverageAggregator.hh

#ifndef GRAIL_AVERAGE_AGGREGATOR_H
#define GRAIL_AVERAGE_AGGREGATOR_H
 
#include "Aggregator.hh"
 
namespace grail
{
    namespace utility
    {
        template <typename ContextType>
        class AverageAggregator : public Aggregator<ContextType>
        {
        public:
            AverageAggregator(const std::vector<std::shared_ptr<Evaluator<ContextType>>>& childEvaluators)
                : Aggregator<ContextType>{childEvaluators}
            {
            }
 
            virtual EvaluatorType GetEvaluatorType() const override final { return EvaluatorType::AGGREGATOR_AVERAGE; }
 
        protected:
            virtual float
            Evaluate(const ContextType& context, UtilityEvaluatorSnapshot* const snapshot) const override final
            {
                float weight = 0;
                for(const auto& evaluator : this->childEvaluators)
                {
                    weight += evaluator->EvaluateContext(context, snapshot);
                }
                return this->childEvaluators.size() > 0 ? weight / this->childEvaluators.size() : 0;
            }
        };
    }
}
 
#endif