IntegerCost operator()(LinguisticCode cat1, LinguisticCode cat2, LinguisticCode cat3) const
bool operator<(const IntegerCost &fc) const
bool operator==(const IntegerCost &fc) const
IntegerCost operator+(const IntegerCost &fc) const
IntegerCost & operator+=(const IntegerCost &fc)
std::ostream & operator<<(std::ostream &out, const FrequencyCost &cost)