vote.nbc

数据挖掘中的bayes算法,很好的代码

/*----------------------------------------------------------------------
  domains
----------------------------------------------------------------------*/
dom(adoption_of_the_budget_resolution) = { n, y };
dom(physician_fee_freeze) = { n, y };
dom(synfuels_corporation_cutback) = { n, y };
dom(party) = { democrat, republican };

/*----------------------------------------------------------------------
  naive Bayes classifier
----------------------------------------------------------------------*/
nbc(party) = {
  prob(party) = {
    democrat  : 267,
    republican: 168 };
  prob(adoption_of_the_budget_resolution|party) = {
    democrat  :{ n: 29, y: 231 },
    republican:{ n: 142, y: 22 }};
  prob(physician_fee_freeze|party) = {
    democrat  :{ n: 245, y: 14 },
    republican:{ n: 2, y: 163 }};
  prob(synfuels_corporation_cutback|party) = {
    democrat  :{ n: 126, y: 129 },
    republican:{ n: 138, y: 21 }};
};

/*----------------------------------------------------------------------
  number of attributes: 4
  number of tuples    : 435
----------------------------------------------------------------------*/