<s>
An	O
alternative	O
measure	O
of	O
whether	O
a	O
matrix	O
is	O
factorable	O
is	O
the	O
Bartlett	B-General_Concept
test	I-General_Concept
,	O
which	O
tests	O
the	O
degree	O
that	O
the	O
matrix	O
deviates	O
from	O
an	O
identity	B-Algorithm
matrix	I-Algorithm
.	O
</s>
