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I
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1
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[
2
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8938
IJ
-
AI
Vo
l.
8
,
No
.
4
,
Dec
em
b
er
20
1
9
:
4
43
–
4
50
444
Se
m
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tic
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en
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er
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f
o
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h
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o
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L
OD
clo
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d
[
1
0
]
.
T
h
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au
th
o
r
s
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f
[
6
]
d
ev
elo
p
ed
a
tax
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ap
p
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cr
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ai
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in
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d
els
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ap
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e
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tal
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ted
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s
.
[
1
1
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r
ev
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w
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d
class
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h
e
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tate
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of
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[
1
2
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1
3
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1
4
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p
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o
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4
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P
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Se
m
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Gate
w
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v
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(
SGS)
[
1
5
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allo
w
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s
latio
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tech
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SS
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[
1
6
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v
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ca
b
u
lar
y
to
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n
ab
le
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s
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m
a
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ter
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p
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m
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all
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as
d
is
co
v
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an
a
g
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m
en
t
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ata,
etc.
B
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a
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s
till
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p
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ter
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b
y
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m
e
th
o
d
s
a
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d
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er
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h
is
p
r
o
b
lem
b
ec
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m
e
m
o
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s
er
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t
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y
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m
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s
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e
o
r
m
o
b
ile
a
s
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o
w
n
in
F
ig
u
r
e
1
.
Fig
u
r
e
1
.
M
ain
ch
alle
n
g
es o
f
I
o
T
,
W
o
T
an
d
SW
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T
T
o
illu
s
tr
ate
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i
s
,
th
e
m
o
b
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[
1
7
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in
I
o
T
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v
ir
o
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m
en
t
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m
p
ac
t
n
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s
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te
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s
.
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h
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ee
ty
p
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o
f
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b
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y
ar
e
w
o
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th
to
m
e
n
tio
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th
e
m
o
b
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f
s
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s
i
n
g
an
d
ac
tu
ati
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d
ev
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(
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g
.
a
s
en
s
o
r
f
ailu
r
e
d
u
e
to
a
b
atter
y
p
r
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b
lem
)
.
T
h
e
m
o
b
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f
g
ate
w
a
y
s
(
e.
g
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m
o
b
ile
p
h
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eh
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th
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m
o
b
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ata
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w
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s
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n
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d
ev
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ch
an
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)
.
W
h
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th
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s
p
h
en
o
m
e
n
o
n
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s
m
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t
l
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co
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id
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a
p
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ca
n
b
e
an
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ti
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s
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t
h
en
ticatio
n
an
d
au
th
o
r
izatio
n
m
ec
h
a
n
i
s
m
s
to
en
s
u
r
e
d
ata
in
te
g
r
it
y
at
t
h
e
i
n
f
o
r
m
atio
n
p
r
o
ce
s
s
in
g
s
y
s
te
m
.
T
h
u
s
,
d
ev
elo
p
in
g
r
eliab
le
an
d
ef
f
icie
n
t
s
o
lu
tio
n
s
t
h
at
ca
n
s
u
p
p
o
r
t
an
d
m
ai
n
tai
n
s
ec
u
r
it
y
a
n
d
p
r
iv
ac
y
r
eq
u
i
r
e
m
en
t
s
i
n
t
h
e
I
o
T
d
o
m
ai
n
is
r
eq
u
ir
ed
.
I
n
th
i
s
p
ap
er
,
w
e
p
r
o
p
o
s
e
a
SW
o
T
Fra
m
e
w
o
r
k
ar
ch
itec
tu
r
e.
O
u
r
d
esig
n
atte
m
p
s
to
ad
d
r
ess
th
e
af
o
r
e
m
en
tio
n
ed
ch
alle
n
g
e
s
b
y
co
m
b
in
i
n
g
d
if
f
e
r
en
t
tech
n
iq
u
es.
T
h
e
m
ai
n
co
n
tr
ib
u
tio
n
o
f
t
h
i
s
p
ap
er
is
th
r
ee
f
o
ld
:
a.
T
h
e
W
eb
o
f
T
h
in
g
s
v
i
s
io
n
is
c
o
m
b
i
n
ed
w
i
th
s
e
m
a
n
tic
tec
h
n
o
lo
g
ies
to
r
ea
c
h
t
h
e
s
e
m
an
t
ic
i
n
ter
o
p
er
ab
ilit
y
b
y
th
e
m
ea
n
o
f
a
n
ap
p
r
o
p
r
iate
o
n
to
lo
g
y
SW
OT
-
I
I
O.
T
h
e
SW
OT
-
I
I
O
is
a
co
m
b
in
a
tio
n
o
f
th
e
SW
OT
o
n
to
lo
g
y
d
escr
ib
i
n
g
d
ev
ices a
n
d
I
I
O
d
escr
ib
in
g
s
er
v
ices a
n
d
d
o
m
ai
n
k
n
o
w
led
g
e.
b.
I
n
d
ep
en
d
en
tl
y
o
f
t
h
eir
co
n
s
t
r
u
cto
r
s
o
r
co
m
m
u
n
ica
tio
n
p
r
o
to
co
ls
,
h
eter
o
g
en
eo
u
s
d
ev
i
ce
s
ca
n
w
o
r
k
to
g
eth
er
t
h
a
n
k
s
to
t
h
e
s
e
m
an
tic
in
ter
o
p
er
ab
ilit
y
.
An
d
t
h
at
s
u
p
p
o
r
ts
t
h
e
s
ca
lab
ilit
y
o
f
t
h
e
s
y
s
te
m
.
I
n
ad
d
itio
n
to
t
h
is
,
d
i
s
tr
ib
u
ted
s
e
m
an
tic
r
ep
o
s
ito
r
ies
a
n
d
d
is
tr
ib
u
ted
i
n
d
ex
i
n
g
ar
e
ad
o
p
ted
to
p
r
eser
v
e
t
h
e
s
y
s
te
m
p
er
f
o
r
m
an
ce
.
c.
T
h
e
d
if
f
er
en
t
g
ate
w
a
y
s
ar
e
lin
k
ed
th
r
o
u
g
h
a
P
2
P
n
et
w
o
r
k
wh
ich
i
s
s
ca
lab
le
an
d
m
o
r
e
s
u
it
ab
le
f
o
r
m
o
b
il
e
n
o
d
es.
B
esid
es,
m
o
b
ile
g
ate
wa
y
s
ca
n
p
la
y
t
h
e
r
o
le
o
f
m
o
b
il
e
n
o
d
es
ab
le
to
v
is
it
s
en
s
i
n
g
d
ev
ices,
co
llect
an
d
s
en
d
t
h
eir
d
ata
to
s
tatic
s
ta
tio
n
s
.
T
h
e
r
em
ai
n
in
g
o
f
t
h
is
p
ap
er
w
il
l
b
e
o
r
g
an
ized
as
f
o
llo
w
s
:
Sectio
n
2
ex
p
lain
s
th
e
m
ain
c
o
m
p
o
n
en
t
s
o
f
th
e
ar
c
h
itect
u
r
e.
Sectio
n
3
s
u
m
m
ar
izes
a
n
d
d
is
cu
s
s
e
s
th
e
r
esu
lt
s
an
d
f
in
d
i
n
g
s
co
m
p
ar
e
d
to
th
e
s
tate
o
f
t
h
e
ar
t.
A
n
d
Sect
io
n
4
co
n
clu
d
es t
h
e
p
ap
er
.
2.
T
H
E
F
RAM
E
WO
RK
ARC
H
I
T
E
CT
U
RE
T
h
e
p
r
o
p
o
s
ed
SW
o
T
f
r
am
e
w
o
r
k
ar
ch
itec
tu
r
e
is
co
m
p
o
s
ed
o
f
6
m
ai
n
co
m
p
o
n
en
ts
il
lu
s
tr
ated
a
s
s
h
o
w
n
in
F
ig
u
r
e
2
.
T
h
ese
co
m
p
o
n
en
ts
ar
e
d
escr
ib
ed
m
o
r
e
th
o
r
o
u
g
h
l
y
i
n
w
h
at
f
o
llo
w
s
:
Fig
u
r
e
2
.
S
y
s
te
m
ar
ch
itect
u
r
e
o
v
er
v
ie
w
a.
Dev
ices
:
th
e
s
e
d
ev
ice
s
ar
e
s
e
n
s
o
r
s
a
n
d
ac
tu
ato
r
s
w
h
ic
h
ar
e
r
esp
o
n
s
ib
le
f
o
r
co
llecti
n
g
d
at
a
an
d
s
en
d
i
n
g
th
e
m
to
th
e
g
a
te
w
a
y
s
o
r
ac
tin
g
o
n
th
eir
en
v
ir
o
n
m
e
n
t.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8938
IJ
-
AI
Vo
l.
8
,
No
.
4
,
Dec
em
b
er
20
1
9
:
4
43
–
4
50
446
b.
Gate
w
a
y
s
:
th
e
s
e
d
ev
ices
n
ee
d
h
ig
h
er
co
m
p
u
t
in
g
p
o
w
er
an
d
also
s
o
m
e
m
e
m
o
r
y
s
p
ac
e
to
s
to
r
e
all
th
e
d
ata
s
en
t
b
y
d
ev
ice
s
.
T
w
o
t
y
p
es
o
f
g
a
te
w
a
y
s
ar
e
a
v
ailab
le
:
s
tatic
g
ate
w
a
y
s
w
h
ich
ar
e
lo
ca
ted
at
f
i
x
ed
p
lace
s
li
k
e
r
o
o
m
s
.
T
h
is
t
y
p
e
is
d
ir
ec
tl
y
co
n
n
ec
ted
to
t
h
e
n
ea
r
b
y
d
e
v
ices.
T
h
e
s
ec
o
n
d
t
y
p
e
is
m
o
b
ile
g
ate
w
a
y
s
w
h
ic
h
ar
e
ab
le
to
m
o
v
e
f
r
o
m
an
ar
ea
to
an
o
t
h
er
in
o
r
d
er
to
g
ath
er
d
ata
f
r
o
m
f
ar
o
r
lo
w
b
atter
y
d
ev
ices
an
d
s
e
n
d
th
i
s
d
ata
to
th
e
n
ea
r
est
s
tatic
g
ate
w
a
y
.
c.
DHT
:
Dis
tr
ib
u
ted
Ha
s
h
T
ab
les
ar
e
s
ca
lab
le,
r
o
b
u
s
t,
a
n
d
s
el
f
-
o
r
g
a
n
izin
g
p
ee
r
-
to
-
p
ee
r
(
P
2
P)
s
y
s
te
m
s
th
at
s
u
p
p
o
r
t e
x
ac
t
m
atc
h
lo
o
k
u
p
s
.
DHT
s
en
ab
le
m
o
r
e
s
ca
lab
le
s
y
s
te
m
w
i
th
o
u
t a
n
y
ce
n
tr
al
p
o
in
t
s
o
f
f
ai
lu
r
e.
d.
Di
s
co
v
er
y
s
er
v
er
:
t
h
e
d
is
co
v
er
y
s
er
v
er
i
s
co
m
p
o
s
ed
o
f
th
r
ee
m
o
d
u
les
:
T
h
e
in
d
ex
in
g
m
o
d
u
le:
T
h
e
I
o
T
s
tatic
g
ate
w
a
y
s
ar
e
r
eg
is
ter
ed
in
th
e
s
y
s
te
m
b
y
g
iv
in
g
s
o
m
e
in
f
o
r
m
atio
n
.
T
h
e
lo
ca
tio
n
in
f
o
r
m
a
tio
n
o
f
t
h
ese
g
ate
w
a
y
s
ar
e
u
s
ed
i
n
a
Geo
-
s
p
atial
in
d
e
x
i
n
o
r
d
er
to
q
u
ick
l
y
lo
ca
te
th
e
I
o
T
g
ate
w
a
y
s
o
f
a
ce
r
tain
ar
ea
.
I
t’
s
w
o
r
t
h
to
m
e
n
tio
n
t
h
a
t th
e
m
o
b
ile
g
ate
w
a
y
s
ar
e
n
o
t
co
n
s
id
er
ed
b
y
th
is
i
n
d
ex
.
T
h
e
an
n
o
tatio
n
m
o
d
u
le:
Fo
r
ea
ch
r
eg
i
s
ter
ed
I
o
T
g
ate
w
a
y
,
th
e
u
s
er
ca
n
ad
d
th
e
d
e
v
ices
m
o
n
ito
r
ed
b
y
th
is
g
ate
w
a
y
.
A
t
t
h
i
s
s
tep
,
th
e
d
is
co
v
er
y
s
er
v
er
d
ea
ls
w
i
th
th
e
s
e
m
a
n
tic
an
n
o
tatio
n
o
f
th
e
d
ev
ice
in
f
o
r
m
atio
n
b
ased
o
n
th
e
SW
OT
-
I
I
O
o
n
to
lo
g
y
.
T
h
e
s
e
m
a
n
t
ic
d
ata
is
s
to
r
ed
in
o
n
e
o
r
s
ev
er
al
s
e
m
an
tic
r
ep
o
s
ito
r
ies.
A
ls
o
,
th
e
d
e
v
ice
i
n
f
o
r
m
atio
n
i
s
s
to
r
ed
in
a
r
elati
o
n
al
d
atab
ase
f
o
r
an
ea
s
y
d
i
s
c
o
v
er
y
.
T
h
e
d
is
co
v
er
y
m
o
d
u
le:
T
w
o
t
y
p
e
o
f
d
is
co
v
er
ies
ar
e
p
r
esen
t
h
er
e.
T
h
e
f
ir
s
t
d
is
co
v
er
y
i
s
wh
en
a
u
s
er
o
r
an
ap
p
licatio
n
r
eq
u
e
s
ts
s
o
m
e
o
b
j
ec
ts
o
f
s
o
m
e
cr
iter
ia
(
t
y
p
e,
lo
ca
tio
n
,
ti
m
e)
.
T
h
e
s
y
s
te
m
f
i
n
d
s
t
h
e
s
tat
ic
I
o
T
g
ate
w
a
y
s
u
s
in
g
th
e
Geo
-
s
p
ati
al
i
n
d
ex
.
Af
ter
t
h
at,
a
S
P
A
R
Q
L
q
u
er
y
is
s
e
n
t
to
all
th
e
s
e
m
an
t
ic
r
ep
o
s
ito
r
ies
o
f
th
e
I
o
T
g
atew
a
y
s
f
ilter
ed
b
y
t
h
e
in
d
e
x
.
A
t
ea
c
h
s
e
m
an
tic
r
ep
o
s
ito
r
y
,
a
s
e
m
a
n
tic
d
is
co
v
er
y
i
s
p
er
f
o
r
m
ed
an
d
t
h
e
id
en
ti
f
ier
s
o
f
t
h
e
o
b
tain
ed
o
b
j
ec
ts
ar
e
r
etu
r
n
ed
to
th
e
d
is
co
v
er
y
s
er
v
er
w
h
ic
h
u
s
e
th
e
m
to
li
s
t
t
h
e
o
b
jects
f
r
o
m
th
e
r
elatio
n
al
d
atab
ase.
T
h
e
s
ec
o
n
d
d
is
co
v
er
y
i
s
p
er
f
o
r
m
ed
b
y
th
e
m
o
b
ile
I
o
T
g
ate
w
a
y
s
p
er
io
d
ically
.
E
f
f
ec
tiv
e
l
y
,
ea
c
h
m
o
b
ile
g
ate
w
a
y
u
s
es
t
h
e
i
n
d
ex
i
n
g
m
o
d
u
le
to
s
ea
r
ch
f
o
r
th
e
n
ea
r
est
s
tatic
I
o
T
g
ate
w
a
y
.
W
h
e
n
f
o
u
n
d
,
t
h
e
m
o
b
ile
g
a
te
w
a
y
u
s
es
t
h
e
d
i
s
tr
ib
u
ted
h
a
s
h
tab
le
to
lo
o
k
f
o
r
t
h
e
r
ef
er
e
n
ce
s
o
f
th
e
s
e
m
a
n
tic
r
ep
o
s
ito
r
ies
o
f
th
is
s
tatic
g
ate
w
a
y
.
Af
ter
t
h
at,
th
e
s
e
m
a
n
tic
d
escr
ip
tio
n
o
f
th
e
d
ev
ices
i
s
s
to
r
ed
in
to
th
e
s
e
r
ep
o
s
ito
r
ies.
T
h
is
d
is
co
v
er
y
allo
w
s
th
e
o
b
j
ec
ts
d
is
co
v
er
y
u
s
i
n
g
o
n
l
y
t
h
e
i
n
d
ex
ed
g
ate
w
a
y
s
(
T
h
e
s
tatic
g
ate
wa
y
s
)
.
e.
Se
m
a
n
tic
r
ep
o
s
ito
r
ies:
O
u
r
s
y
s
te
m
lin
k
s
ea
ch
g
ate
w
a
y
to
o
n
e
o
r
s
ev
er
al
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
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8938
IJ
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AI
Vo
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8
,
No
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4
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er
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u
r
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u
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
IJ
-
AI
I
SS
N:
2252
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8938
To
w
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latio
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m
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.
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f
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ev
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RE
F
E
R
E
NC
E
S
[1
]
L
.
A
t
z
o
ri,
A
.
Ie
ra
,
a
n
d
G
.
M
o
ra
b
i
to
,
“
T
h
e
In
ter
n
e
t
o
f
T
h
in
g
s:
A
su
rv
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y
,
”
Co
m
p
u
ter
Ne
tw
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rk
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v
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l.
5
4
,
n
o
.
1
5
,
p
p
.
2
7
8
7
–
2
8
0
5
,
Oc
t.
2
0
1
0
.
[2
]
M
.
El
k
h
o
d
r
,
S
.
S
h
a
h
re
sta
n
i
,
a
n
d
H.
Ch
e
u
n
g
,
“
In
tern
e
t
o
f
T
h
in
g
s
Re
se
a
rc
h
Ch
a
ll
e
n
g
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s,”
A
d
v
a
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s
in
In
f
o
r
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a
ti
o
n
S
e
c
u
rit
y
,
P
riv
a
c
y
,
a
n
d
Et
h
ics
,
p
p
.
1
3
–
3
6
,
2
0
1
7
.
[3
]
M
.
No
u
ra
,
M
.
A
ti
q
u
z
z
a
m
a
n
,
a
n
d
M
.
G
a
e
d
k
e
,
“
In
tero
p
e
ra
b
il
it
y
in
I
n
tern
e
t
o
f
T
h
in
g
s:
T
a
x
o
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o
m
ies
a
n
d
Op
e
n
Ch
a
ll
e
n
g
e
s,”
M
o
b
i
le Ne
tw
o
rk
s a
n
d
A
p
p
li
c
a
ti
o
n
s,
v
o
l.
2
4
,
n
o
.
3
,
p
p
.
7
9
6
–
8
0
9
,
J
u
l
.
2
0
1
8
.
[4
]
D.
G
u
in
a
rd
,
V
.
T
rif
a
,
F
.
M
a
tt
e
rn
,
a
n
d
E.
W
il
d
e
,
“
F
ro
m
th
e
I
n
ter
n
e
t
o
f
T
h
in
g
s
to
th
e
W
e
b
o
f
T
h
in
g
s:
Re
so
u
rc
e
-
o
rien
ted
A
rc
h
it
e
c
tu
re
a
n
d
Be
st
P
r
a
c
ti
c
e
s,”
A
rc
h
it
e
c
ti
n
g
th
e
In
tern
e
t
o
f
T
h
in
g
s,
p
p
.
9
7
–
1
2
9
,
2
0
1
1
.
[5
]
h
tt
p
s:/
/www
.
w
3
.
o
rg
/S
u
b
m
issio
n
/
w
o
t
-
m
o
d
e
l/
[6
]
S
.
De
,
Y.
Z
h
o
u
,
a
n
d
K.
M
o
e
ss
n
e
r,
“
On
to
l
o
g
ies
a
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[7
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R.
M
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ta,
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i
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d
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tern
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s:
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2
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[8
]
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Zen
g
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[9
]
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P
f
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r,
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Ro
m
e
r,
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Bim
s
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h
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s,
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ietz
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Rich
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rd
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n
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2
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M
.
Ru
ta,
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3
]
M
.
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ta,
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.
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.
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4
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Z.
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X
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.
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Ji,
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trac
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[1
5
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6
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p
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7
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I.
Na
d
im
,
Y.
El
G
h
a
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a
m
,
a
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d
A
.
S
a
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M
o
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ty
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f
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f
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s:
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Distrib
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y
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p
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2
4
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–
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1
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.
[1
8
]
M
.
Ry
u
,
J.
Kim
,
a
n
d
J.
Yu
n
,
“
In
t
e
g
ra
ted
S
e
m
a
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ti
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rv
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latf
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tern
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2
1
3
7
–
2
1
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0
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Ja
n
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2
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1
5
.
[1
9
]
M
.
Ba
u
e
r
a
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d
S
.
L
o
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g
o
,
“
G
e
o
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Disc
o
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th
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tern
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f
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s,”
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e
c
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re
No
tes
in
Co
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p
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r
S
c
ien
c
e
,
p
p
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4
2
4
–
4
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1
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2
0
1
4
.
[2
0
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S
.
L
ian
g
a
n
d
C.
-
Y.
Hu
a
n
g
,
“
Ge
o
CENS
:
A
G
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sp
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C
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stru
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so
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1
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1
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1
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Din
g
,
Z.
Ch
e
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,
a
n
d
Q.
Ya
n
g
,
“
Io
T
-
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V
KSea
rc
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:
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ti
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m
u
lt
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a
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se
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rc
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in
tern
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s,”
In
ter
n
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mm
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8
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2
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2
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Y.
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De
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,
a
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2
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1
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IEE
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7
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In
ter
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3
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tt
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[2
4
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,
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Ba
rn
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d
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T
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2
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I
F
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teg
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Ne
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a
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rv
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M
a
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m
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(I
M
),
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a
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2
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.
[2
5
]
W
.
Wan
g
,
S
.
De
,
G
.
Ca
ss
a
r,
a
n
d
K.
M
o
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ss
n
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r,
“
A
n
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x
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m
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tal
stu
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Ex
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A
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s,
v
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4
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3
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8
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M
a
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2
0
1
5
.
B
I
O
G
RAP
H
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AUTH
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Is
m
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Na
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Ba
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De
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in
2
0
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in
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2
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f
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m
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Ra
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Ra
b
a
t).
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is
a
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lab
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to
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f
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M
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W
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In
tern
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telli
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tern
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telli
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b
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ica
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ield
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f
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d
e
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a
ti
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tern
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t
o
f
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h
in
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s,
Big
d
a
ta
a
n
d
a
rti
f
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l
in
telli
g
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n
c
e
.
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o
b
tai
n
e
d
h
is DE
S
A
in
2
0
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2
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n
t
h
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ield
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d
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tw
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r
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g
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rin
g
in
1
9
9
9
a
n
d
a
DEUG
in
1
9
9
7
.
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