<s>
The	O
name	O
weak	B-General_Concept
consistency	I-General_Concept
can	O
be	O
used	O
in	O
two	O
senses	O
.	O
</s>
<s>
In	O
the	O
first	O
sense	O
,	O
strict	O
and	O
more	O
popular	O
,	O
weak	B-General_Concept
consistency	I-General_Concept
is	O
one	O
of	O
the	O
consistency	B-General_Concept
models	I-General_Concept
used	O
in	O
the	O
domain	O
of	O
concurrent	B-Architecture
programming	I-Architecture
(	O
e.g.	O
</s>
<s>
in	O
distributed	B-Operating_System
shared	I-Operating_System
memory	I-Operating_System
,	O
distributed	B-General_Concept
transactions	I-General_Concept
etc	O
.	O
</s>
<s>
A	O
protocol	O
is	O
said	O
to	O
support	O
weak	B-General_Concept
consistency	I-General_Concept
if	O
:	O
</s>
<s>
In	O
the	O
second	O
,	O
more	O
general	O
,	O
sense	O
weak	B-General_Concept
consistency	I-General_Concept
may	O
be	O
applied	O
to	O
any	O
consistency	B-General_Concept
model	I-General_Concept
weaker	O
than	O
sequential	B-General_Concept
consistency	I-General_Concept
.	O
</s>
<s>
A	O
stricter	O
condition	O
is	O
strong	B-General_Concept
consistency	I-General_Concept
,	O
where	O
parallel	O
processes	O
can	O
observe	O
only	O
one	O
consistent	O
state	O
.	O
</s>
