<s>
The	O
Babel	B-Algorithm
function	I-Algorithm
(	O
also	O
known	O
as	O
cumulative	B-Algorithm
coherence	I-Algorithm
)	O
measures	O
the	O
maximum	O
total	O
coherence	O
between	O
a	O
fixed	O
atom	O
and	O
a	O
collection	O
of	O
other	O
atoms	O
in	O
a	O
dictionary	O
.	O
</s>
<s>
The	O
Babel	B-Algorithm
function	I-Algorithm
was	O
conceived	O
of	O
in	O
the	O
context	O
of	O
signals	O
for	O
which	O
there	O
exists	O
a	O
sparse	O
representation	O
consisting	O
of	O
atoms	O
or	O
columns	O
of	O
a	O
redundant	O
dictionary	O
matrix	O
,	O
A	O
.	O
</s>
<s>
When	O
p	O
=	O
1	O
,	O
the	O
babel	B-Algorithm
function	I-Algorithm
is	O
the	O
mutual	O
coherence	O
.	O
</s>
<s>
Li	O
and	O
Lin	O
have	O
used	O
the	O
Babel	B-Algorithm
function	I-Algorithm
to	O
aid	O
in	O
creating	O
effective	O
dictionaries	O
for	O
Machine	O
Learning	O
applications	O
.	O
</s>
