Method get_mean_q

core/ctree/cnode.cpp:96–121

    }

    float CNode::get_mean_q(int isRoot, float parent_q, float discount){
        float total_unsigned_q = 0.0;
        int total_visits = 0;
        float parent_value_prefix = this->value_prefix;
        for(int a = 0; a < this->action_num; ++a){
            CNode* child = this->get_child(a);
            if(child->visit_count > 0){
                float true_reward = child->value_prefix - parent_value_prefix;
                if(this->is_reset == 1){
                    true_reward = child->value_prefix;
                }
                float qsa = true_reward + discount * child->value();
                total_unsigned_q += qsa;
                total_visits += 1;
            }
        }

        float mean_q = 0.0;
        if(isRoot && total_visits > 0){
            mean_q = (total_unsigned_q) / (total_visits);
        }
        else{
            mean_q = (parent_q + total_unsigned_q) / (total_visits + 1);
        }
        return mean_q;
    }

    void CNode::print_out(){
        return;