<s>
Subspace	B-General_Concept
Gaussian	I-General_Concept
mixture	I-General_Concept
model	I-General_Concept
(	O
SGMM	B-General_Concept
)	O
is	O
an	O
acoustic	O
modeling	O
approach	O
in	O
which	O
all	O
phonetic	O
states	O
share	O
a	O
common	O
Gaussian	O
mixture	O
model	O
structure	O
,	O
and	O
the	O
means	O
and	O
mixture	O
weights	O
vary	O
in	O
a	O
subspace	O
of	O
the	O
total	O
parameter	O
space	O
.	O
</s>
