Decision Tree Learning
milk=no, gills=yes, class=fish
milk=no, gills=yes, class=reptile
milk=no, gills=yes, class=bird
milk=no, gills=yes, class=mammal
milk=no, gills=no, class=fish
milk=no, gills=no, class=reptile
milk=no, gills=no, class=bird
milk=no, gills=no , class=mammal
milk=no, eggs=yes, class=fish
milk=no, eggs=yes, class=reptile
milk=no, eggs=yes, class=bird
milk=no, eggs=yes, class=mammal
milk=no, eggs=no, class=fish
milk=no, eggs=no, class=reptile
milk=no, eggs=no, class=bird
milk=no, eggs=no, class=mammal
#class × #(attribute, value)