From: Building an associative classifier with multiple minimum supports
Attribute-name
Attribute-value
Item
a
{1, 2, 3}
(a, 1) (a, 2) (a, 3)
b
{1, 2}
(b,1) (b, 2)
c
(c,1) (c, 2) (c, 3)
d
(d, 1) (d, 2)
e
(e, 1) (e, 2)