drug.nbc

数据挖掘中的bayes算法,很好的代码

/*----------------------------------------------------------------------
  domains
----------------------------------------------------------------------*/
dom(Age) = ZZ;
dom(Blood_pressure) = { high, low, normal };
dom(Drug) = { A, B };

/*----------------------------------------------------------------------
  naive Bayes classifier
----------------------------------------------------------------------*/
nbc(Drug) = {
  prob(Drug) = {
    A: 6,
    B: 6 };
  prob(Age|Drug) = {
    A: N(36.3333, 161.867) [6],
    B: N(47.8333, 310.967) [6] };
  prob(Blood_pressure|Drug) = {
    A:{ high: 3, low: 0, normal: 3 },
    B:{ high: 0, low: 3, normal: 3 }};
};

/*----------------------------------------------------------------------
  number of attributes: 3
  number of tuples    : 12
----------------------------------------------------------------------*/