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1145
1134
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In
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th
m
o
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S
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M
)
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h
m
is
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ti
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o
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C
-
IM
D).
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S
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a
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m
sim
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h
m
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lt
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in
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I),
w
h
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lex
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to
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2
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a
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d
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ly
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v
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li
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te
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ro
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d
a
lg
o
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h
m
,
it
is
tes
ted
o
n
a
th
re
e
lev
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l
n
e
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tral
p
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in
t
c
lam
p
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d
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in
v
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d
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n
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d
f
lu
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e
rv
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d
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n
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e
,
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f
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c
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t
o
f
th
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p
ro
p
o
se
d
m
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th
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d
.
K
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w
o
r
d
:
C
SVP
W
M
DT
C
ML
I
MSVP
W
M
NP
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VSI
Co
p
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rig
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t
©
201
6
In
s
t
it
u
te o
f
A
d
v
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n
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g
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.
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l
rig
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re
se
rv
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d
.
C
o
r
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s
p
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A
uth
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r
:
G.
Ku
m
ar
a
S
w
a
m
y
,
Dep
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t
m
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t o
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ical
an
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k
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g
m
ail.
co
m
1.
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NT
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D
UCT
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,
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o
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w
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is
s
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to
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at
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DC
m
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s
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h
m
[
1
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,
b
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t
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tr
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[
2
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.
D
if
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DT
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h
a
s
b
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n
p
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ted
in
[
3
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an
d
f
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n
all
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co
n
cl
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ed
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at
DT
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g
i
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f
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to
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R
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4
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in
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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ce
i
n
t
h
is
p
ap
er
a
M
SVP
W
M
alg
o
r
ith
m
i
s
p
r
o
p
o
s
ed
in
w
h
ich
s
y
m
m
etr
y
o
f
th
e
s
p
ac
e
v
ec
to
r
s
is
u
tili
ze
d
,
th
er
b
y
ex
te
n
d
in
g
t
h
e
tr
ad
itio
n
al
SVP
W
M
ap
p
r
o
ac
h
to
a
M
L
I
’
s
i
n
[
5
].
T
o
v
alid
ate
th
e
f
u
n
ctio
n
alit
y
o
f
th
e
p
r
o
p
o
s
ed
alg
o
r
ith
m
,
th
r
ee
-
le
v
el
i
n
v
er
ter
f
ed
DT
C
-
I
M
D
is
te
s
ted
u
n
d
er
v
ar
io
u
s
o
p
er
atin
g
co
n
d
itio
n
s
li
k
e
tr
an
s
ien
t,
s
tead
y
s
ta
te,
s
p
ee
d
r
ev
er
s
al
an
d
v
ar
iab
le
lo
ad
c
o
n
d
itio
n
s
.
A
l
s
o
%
T
HD
in
p
h
ase
v
o
ltag
e
an
d
n
o
-
lo
ad
s
tato
r
cu
r
r
en
t
as
a
p
er
f
o
r
m
a
n
ce
m
ea
s
u
r
e
s
o
f
th
e
P
W
M
alg
o
r
ith
m
ar
e
an
al
y
s
ed
,
an
d
a
n
i
m
p
r
o
v
e
m
en
t o
f
8
9
.
3
3
%,
9
5
.
2
8
% a
r
e
ob
s
er
v
ed
.
2.
CDTC
T
h
e
C
DT
C
b
lo
ck
d
iag
r
a
m
is
s
h
o
w
n
i
n
Fi
g
u
r
e
1
.
I
n
ev
er
y
s
a
m
p
li
n
g
ti
m
e
o
f
t
h
e
i
n
v
e
r
ter
s
tato
r
v
o
ltag
e
s
an
d
cu
r
r
en
t
s
ar
e
s
a
m
p
led
.
Usi
n
g
t
h
ese
s
a
m
p
led
in
p
u
ts
s
tato
r
f
l
u
x
,
s
p
ee
d
,
to
r
q
u
e
an
d
f
lu
x
an
g
le
ar
e
esti
m
ated
in
th
e
ad
ap
tiv
e
m
o
to
r
m
o
d
el.
E
s
t
i
m
ated
to
r
q
u
e
an
d
f
lu
x
ar
e
co
m
p
ar
ed
w
i
th
th
eir
r
esp
ec
tiv
e
r
ef
er
en
ce
v
al
u
es
t
h
r
o
u
g
h
h
y
s
t
er
esis
co
m
p
ar
ato
r
s
.
B
ased
o
n
to
r
q
u
e,
f
l
u
x
er
r
o
r
s
a
n
d
f
l
u
x
an
g
le
ap
t
s
w
i
tch
i
n
g
s
tate
is
g
en
er
ated
th
r
o
u
g
h
th
e
o
p
tim
a
l
s
w
itc
h
i
n
g
tab
le.
Si
n
ce
n
o
n
e
o
f
t
h
e
in
v
er
ter
s
w
itc
h
i
n
g
v
o
lta
g
e
v
ec
to
r
is
ab
le
to
g
en
er
ate
t
h
e
ex
ac
t
s
tat
o
r
v
o
ltag
e
r
eq
u
ir
ed
to
p
r
o
d
u
ce
th
e
d
esire
d
ch
a
n
g
e
s
i
n
to
r
q
u
e
an
d
f
l
u
x
in
m
o
s
t
o
f
th
e
s
w
itc
h
i
n
g
i
n
s
ta
n
ce
s
,
h
i
g
h
r
ip
p
le
in
to
r
q
u
e,
f
l
u
x
an
d
s
tat
o
r
cu
r
r
en
t
ar
e
i
n
tr
i
n
s
ic
w
it
h
C
DT
C
.
I
n
o
r
d
er
to
o
v
er
co
m
e
t
h
is
p
r
o
b
lem
SVP
W
M
b
ased
DT
C
(
SVP
W
M
-
DT
C
)
is
p
r
o
p
o
s
ed
[
6
]
.
I
n
th
i
s
ap
p
r
o
ac
h
th
e
r
ip
p
les
i
n
to
r
q
u
e,
f
lu
x
an
d
c
u
r
r
en
t
ar
e
r
ed
u
ce
d
b
y
s
e
lecti
n
g
v
o
ltag
e
v
ec
to
r
s
n
o
t
f
o
r
th
e
en
t
ir
e
s
a
m
p
lin
g
p
er
io
d
as
in
C
DT
C
,
b
u
t
o
n
l
y
f
o
r
a
p
ar
t
o
f
th
e
s
a
m
p
l
i
n
g
p
er
io
d
ex
p
r
ess
e
d
as
s
w
itc
h
in
g
p
er
io
d
an
d
b
y
u
s
i
n
g
ze
r
o
v
o
ltag
e
v
ec
to
r
f
o
r
r
est
o
f
t
h
e
p
er
io
d
.
So
,
SVP
W
M
-
DT
C
g
en
er
ate
s
a
n
u
m
b
er
o
f
v
o
ltag
e
v
ec
to
r
s
h
ig
h
er
t
h
an
th
at
o
f
u
s
ed
i
n
C
DT
C
a
n
d
s
o
ac
h
iev
es
a
s
en
s
ib
le
r
ed
u
c
tio
n
o
f
r
ip
p
le
in
to
r
q
u
e,
f
lu
x
an
d
s
tato
r
cu
r
r
en
t
m
ai
n
tai
n
i
n
g
co
n
s
ta
n
t s
w
itc
h
i
n
g
f
r
eq
u
e
n
c
y
.
Fig
u
r
e
1
.
B
lo
ck
Diag
r
a
m
o
f
C
DT
C
o
f
I
n
d
u
ctio
n
Mo
to
r
D
r
iv
e
3.
CSVP
WM
ST
RAT
E
G
Y
F
O
R
T
WO
L
E
V
E
L
I
NVE
RT
E
R
W
ith
a
th
r
ee
-
p
h
a
s
e,
t
w
o
le
v
el
v
o
ltag
e
s
o
u
r
ce
in
v
er
ter
(
VSI
)
th
er
e
ar
e
eig
h
t
p
o
s
s
ib
le
s
w
itc
h
in
g
s
tates.
T
w
o
s
ta
tes,
f
r
o
m
w
h
ic
h
n
o
p
o
w
er
g
et
s
tr
a
n
s
f
er
r
ed
f
r
o
m
s
o
u
r
ce
to
lo
ad
ar
e
ter
m
ed
as
n
u
l
l
v
ec
to
r
s
o
r
ze
r
o
s
tates.
T
h
e
o
th
er
s
ix
s
tates
ca
l
led
ac
tiv
e
s
tates
.
T
h
e
ac
tiv
e
s
t
ates
ca
n
b
e
r
ep
r
esen
ted
b
y
s
p
ac
e
v
ec
to
r
s
ea
ch
o
f
m
ag
n
it
u
d
e
V
dc
a
n
d
d
iv
id
es
t
h
e
s
p
ac
e
v
ec
to
r
p
lan
e
in
to
s
i
x
eq
u
al
s
ec
to
r
s
a
s
s
h
o
w
n
i
n
Fig
u
r
e
2
.
I
t c
an
b
e
s
h
o
w
n
th
at
all
t
h
e
s
ix
ac
t
iv
e
s
tates
ca
n
b
e
r
ep
r
esen
ted
b
y
s
p
ac
e
v
ec
to
r
s
g
i
v
e
n
b
y
(
1
)
f
o
r
m
i
n
g
a
r
eg
u
lar
h
ex
a
g
o
n
an
d
d
iv
id
in
g
t
h
e
s
p
ac
e
p
lan
e
i
n
to
s
i
x
s
ec
to
r
s
ea
ch
o
f
6
0
0
,
d
e
n
o
ted
as 1
,
2,
…,
6
as sh
o
w
n
i
n
Fi
g
u
r
e
2
.
V
S
=
V
dc
∗
e
j
(
S
−
1
)
Π
/
3
,
S
=
1
,
2
,
.
.
,
6
.
(
1
)
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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N
:
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8
6
9
4
IJ
PEDS
Vo
l.
7
,
No
.
4
,
Dec
em
b
er
2
0
1
6
:
1
1
3
4
–
1
1
4
5
1136
I
n
th
e
S
VP
W
M
s
tr
ateg
y
f
o
r
t
w
o
le
v
el
in
v
er
ter
,
th
e
d
esire
d
r
ef
er
en
ce
v
o
lta
g
e
v
ec
to
r
is
g
e
n
er
ated
b
y
ti
m
e
a
v
er
ag
i
n
g
t
h
e
t
w
o
n
ea
r
b
y
ac
ti
v
e
v
o
lta
g
e
s
tates
a
n
d
t
wo
ze
r
o
s
tates
in
e
v
er
y
s
w
itc
h
i
n
g
p
er
io
d
T
S
.
Fo
r
a
g
iv
e
n
r
ef
er
e
n
ce
v
o
lta
g
e
̅
̅
̅
̅
̅
,
th
e
v
o
lt
-
ti
m
e
b
alan
ce
is
m
ai
n
tain
ed
b
y
ap
p
l
y
i
n
g
t
h
e
ac
ti
v
e
s
ta
te
x
,
V
x
ac
tiv
e
s
tate
y
,
V
y
an
d
t
w
o
ze
r
o
s
tates,
Z
x
a
n
d
Z
y
to
g
et
h
er
f
o
r
d
u
r
ati
o
n
s
,
T
x
,T
y
an
d
T
Z
r
esp
ec
tiv
ely
,
as g
i
v
en
i
n
(
2
)
T
x
=
M
∗
S
i
n
(
60
0
−
α
)
s
i
n
60
0
∗
T
s
(
2
.
1
)
T
y
=
M
∗
S
i
n
(
α
)
s
i
m
60
0
∗
T
s
(
2
.
2
)
T
Z
=
T
s
-
T
1
-
T
2
(
2
.
3
)
Fig
u
r
e
2
.
S
w
i
tch
i
n
g
State
s
a
n
d
C
o
r
r
esp
o
n
d
in
g
Vo
lta
g
e
Vec
to
r
s
o
f
a
T
h
r
ee
P
h
ase
VSI
C
o
n
v
er
ter
.
1,
2
,
3
,
4,
5,
6
ar
e
th
e
S
ec
to
r
s
A
lt
h
o
u
g
h
i
n
C
S
VP
W
M
s
tr
ateg
y
t
h
e
t
w
o
ac
ti
v
e
v
ec
to
r
s
a
n
d
t
w
o
ze
r
o
v
ec
to
r
s
m
u
s
t
b
e
a
p
p
lied
f
o
r
d
u
r
atio
n
s
as i
n
(
2
)
,
th
ese
ca
n
b
e
ap
p
lied
in
d
if
f
er
en
t
w
a
y
s
th
e
r
b
y
cr
ea
ti
n
g
d
i
f
f
er
e
n
t seq
u
en
c
es [
7
]
.
4.
P
RO
P
O
SE
D
M
SVPWM
AL
G
O
RI
T
H
M
A
t
h
r
ee
le
v
el
NP
C
i
n
v
er
ter
i
s
s
h
o
w
n
i
n
Fi
g
u
r
e
3
.
W
ith
a
t
h
r
ee
lev
el
in
v
er
ter
th
er
e
ar
e
t
h
r
ee
s
tate
s
co
r
r
esp
o
n
d
in
g
to
a
ze
r
o
v
ec
t
o
r
,
lab
eled
as
V
0
,
1
2
s
tates
(
p
iv
o
t
s
ta
tes)
co
r
r
esp
o
n
d
in
g
to
s
i
x
v
o
ltag
e
v
ec
to
r
s
(
p
iv
o
t
v
ec
to
r
s
)
ea
ch
o
f
m
ag
n
it
u
d
e
0
.
5
V
dc
ar
e
lab
ele
d
,
V
1
-
V
6
,
s
ix
s
tates
co
r
r
esp
o
n
d
in
g
to
s
i
x
v
o
lta
g
e
v
ec
to
r
s
o
f
m
ag
n
it
u
d
e
0
.
8
6
6
V
dc
lab
eled
,
V
7
-
V
12
a
n
d
s
i
x
s
tates
co
r
r
esp
o
n
d
in
g
to
v
o
ltag
e
v
ec
to
r
s
o
f
m
a
g
n
i
tu
d
e
V
dc
lab
eled
,
V
13
-
V
18
.
So
w
it
h
t
h
r
e
e
lev
el
VSI
th
er
e
ar
e
2
7
s
w
i
tc
h
in
g
s
tate
s
co
r
r
esp
o
n
d
in
g
to
a
to
tal
o
f
1
9
v
o
lta
g
e
v
ec
to
r
s
.
As
ex
p
lai
n
ed
in
th
e
p
r
ev
io
u
s
s
ec
t
io
n
th
e
s
p
ac
e
p
lan
e
o
f
t
w
o
lev
el
in
v
er
ter
co
n
s
i
s
t
s
o
f
o
n
e
ze
r
o
v
ec
to
r
an
d
s
i
x
ac
tiv
e
v
ec
to
r
s
o
f
m
a
g
n
itu
d
e
V
dc
.
Hen
ce
,
n
ea
r
es
t s
tate
s
ar
e
a
v
ailab
le
i
n
ca
s
e
o
f
t
h
r
ee
lev
el
i
n
v
er
ter
t
h
a
n
w
it
h
t
h
at
o
f
t
w
o
le
v
el
in
v
er
te
r
an
d
s
o
r
ed
u
ce
d
v
o
lta
g
e
r
ip
p
le
w
ith
M
L
I
is
e
x
p
licit
a
t
all
m
o
d
u
latio
n
i
n
d
ices.
B
u
t
at
t
h
e
s
a
m
e
ti
m
e
t
w
o
p
r
o
b
le
m
s
m
a
n
i
f
est
w
it
h
s
p
ac
e
v
e
cto
r
ap
p
r
o
ac
h
to
ML
I
.
First
o
n
e
is
,
id
en
ti
f
y
i
n
g
th
e
r
ef
er
en
ce
v
ec
to
r
p
o
s
itio
n
in
te
r
n
s
o
f
s
u
b
s
ec
to
r
/s
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