<s>
Chang	B-Operating_System
and	I-Operating_System
Roberts	I-Operating_System
algorithm	I-Operating_System
is	O
a	O
ring-based	O
coordinator	O
election	O
algorithm	O
,	O
employed	O
in	O
distributed	B-Architecture
computing	I-Architecture
.	O
</s>
<s>
The	O
algorithm	O
respects	O
safety	B-Application
:	O
a	O
process	O
will	O
receive	O
an	O
elected	O
message	O
with	O
its	O
own	O
UID	O
only	O
if	O
his	O
UID	O
is	O
greater	O
than	O
others	O
 '	O
,	O
and	O
only	O
when	O
all	O
processes	O
agree	O
on	O
the	O
same	O
UID	O
.	O
</s>
<s>
The	O
algorithm	O
also	O
respects	O
liveness	B-Application
.	O
</s>
