ค่าเกนข้อมูล

อินพุต:
std::vector<std::string> labels = {"no", "no", "yes", "yes"};
std::vector<std::string> feature = {"sunny", "sunny", "rain", "rain"};

ผลลัพธ์ที่คาดหวัง:
double expected = 1.0;

อินพุต:
string[] labels = new string[] {"no", "no", "yes", "yes"};
string[] feature = new string[] {"sunny", "sunny", "rain", "rain"};

ผลลัพธ์ที่คาดหวัง:
double expected = 1.0;

อินพุต:
std::vector<std::string> labels = {"yes", "yes", "no", "no"};
std::vector<std::string> feature = {"a", "b", "a", "b"};

ผลลัพธ์ที่คาดหวัง:
double expected = 0.0;

อินพุต:
string[] labels = new string[] {"yes", "yes", "no", "no"};
string[] feature = new string[] {"a", "b", "a", "b"};

ผลลัพธ์ที่คาดหวัง:
double expected = 0.0;