Is isotonice supported ?

[EagleDangar]

Hi,
I am trying to read pmml file for isotonic regressions and I am getting 0 predicted value for any inputs.

here is my c++ code. the pmml file already verified it is working with jpmml evaluator,

#include <iostream>
#include <unordered_map>

#include "cPMML.h"

template<typename K, typename V>
void print_map(std::unordered_map<K, V> const &m)
{
    for (auto const &pair: m) {
        std::cout << "{" << pair.first << ": " << pair.second << "}\n";
    }
}

// using namespace std;
int main() {

	std::string model_filepath = "calib_isotonic_model.xml";
	cpmml::Model model(model_filepath);
	std::unordered_map<std::string, std::string> sample = {
		{"prob_pred","16000000"}
	};
	print_map(sample);
	std::cout << "score: " << model.predict(sample) << std::endl;

  	return 0;
}