<s>
Simpath	O
is	O
an	O
algorithm	O
introduced	O
by	O
Donald	O
Knuth	O
that	O
constructs	O
a	O
zero-suppressed	B-Data_Structure
decision	I-Data_Structure
diagram	I-Data_Structure
(	O
ZDD	B-Data_Structure
)	O
representing	O
all	O
simple	O
paths	O
between	O
two	O
vertices	O
in	O
a	O
given	O
graph	O
.	O
</s>
