drug.dt

来自「it is tree Dtree algorithm. so see it. i」· DT 代码 · 共 25 行

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

/*----------------------------------------------------------------------
  decision tree
----------------------------------------------------------------------*/
dtree(Drug) =
{ (Blood_pressure)
  high  :{ A: 3 },
  low   :{ B: 3 },
  normal:{ (Age|41)
           <:{ A: 3 },
           >:{ B: 3 }}};

/*----------------------------------------------------------------------
  number of attributes: 3
  tree height         : 3
  number of nodes     : 6
  number of tuples    : 12
----------------------------------------------------------------------*/