Rule Tree
•
Rule tree graphically represents a rule
1)
A
®
e
:
2)
A
®
X
1
X
2
…
X
n
:
A
e
A
X
1
X
2
…
X
n
•
Derivation tree corresponding to a derivation
S
Þ
…
Þ
U
1
U
2
…
U
m
A
V
1
V
2
…
V
n
S
U
1
U
2
…
U
m
V
1
V
2
…
V
n
…
…
…
…
…
…
Rule tree
corresponding
to
A
®
x
x
A
10
/50
Þ
U
1
U
2
…
U
m
x
V
1
V
2
…
V
n