Dynamic
Enumeration Tree
{ }
r1 {abc}
r2 {acd}
r3 {bc}
r4
{d}
a{r2}
b{r3}
c{r2r3 }
ab {}
ac { r2}
bc {r3 }
a{r1}
d {r4 }
ac{r1 }
b{r1 }
Row enumeration
to Feature
Enumeration
c {r1r3}
ad{ }
acd { }
cd { }
c{r1r2 }
bc {r1 }
r1 {abc}
r1r2 {ac}
r1r3 {bc}
r1r4 { }
r1r2r3 {c}
r1r2r4 { }
r1r3r4 { }
r1r2r3r4 { }
ac:
{r1r2}
bc:
{r1r3}
c:
{r1r2r3}