<s>
In	O
data	B-General_Concept
compression	I-General_Concept
and	O
the	O
theory	O
of	O
formal	O
languages	O
,	O
the	O
smallest	B-Algorithm
grammar	I-Algorithm
problem	I-Algorithm
is	O
the	O
problem	O
of	O
finding	O
the	O
smallest	O
context-free	O
grammar	O
that	O
generates	O
a	O
given	O
string	O
of	O
characters	O
(	O
but	O
no	O
other	O
string	O
)	O
.	O
</s>
