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8708
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f
n
e
w
clo
u
d
s
er
v
ices a
t e
v
er
y
s
t
ag
e.
I
n
2
0
0
5
,
th
e
Salesf
o
r
ce
A
p
p
E
x
ch
a
n
g
e
w
as
la
u
n
c
h
ed
,
it
i
s
an
o
n
li
n
e
ap
p
licatio
n
m
ar
k
etp
lace
o
f
v
ar
io
u
s
b
u
s
i
n
e
s
s
ap
p
licatio
n
s
an
d
co
n
s
u
lt
in
g
p
ar
tn
er
s
t
h
at
p
r
o
v
id
e
s
o
lu
tio
n
s
f
o
r
co
m
p
a
n
ies
o
p
er
ati
n
g
w
it
h
v
ar
io
u
s
n
ee
d
s
a
n
d
v
ar
io
u
s
in
d
u
s
tr
ies.
E
v
en
th
o
u
g
h
t
h
e
y
p
r
o
v
id
e
t
ec
h
n
ical
l
y
s
o
u
n
d
s
ea
r
ch
en
g
i
n
e
A
p
p
E
x
c
h
an
g
e
r
eq
u
ir
es
t
h
e
cu
s
to
m
er
s
to
h
a
v
e
a
co
m
m
o
n
k
n
o
w
led
g
e
ab
o
u
t
t
h
e
s
o
f
t
w
ar
e
ap
p
licatio
n
,
h
en
ce
it
is
n
o
t s
u
itab
le
f
o
r
n
e
w
u
s
er
s
.
T
h
e
C
SIS
s
y
s
te
m
ad
d
r
ess
e
s
th
e
is
s
u
e
b
y
u
s
i
n
g
h
y
b
r
id
r
ec
o
m
m
en
d
atio
n
s
y
s
te
m
wh
ich
i
s
a
co
m
b
i
n
atio
n
o
f
b
o
th
co
n
ten
t
-
b
ased
an
d
co
llab
o
r
ativ
e
r
ec
o
m
m
en
d
atio
n
s
y
s
te
m
,
in
r
ec
o
m
m
en
d
i
n
g
s
u
itab
l
e
clo
u
d
s
er
v
ice
s
b
ased
o
n
u
s
er
’
s
r
eq
u
ir
e
m
en
ts
[
5
]
.
T
h
is
s
y
s
te
m
o
v
er
co
m
e
s
t
h
e
af
o
r
e
m
en
tio
n
ed
p
r
o
b
lem
s
o
f
t
h
e
s
y
s
te
m
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
T
h
e
m
ai
n
m
o
ti
v
atio
n
o
f
t
h
e
C
SI
S
s
y
s
te
m
i
s
to
h
elp
cu
s
to
m
e
r
s
in
id
en
ti
f
icatio
n
o
f
clo
u
d
s
e
r
v
ices
an
d
s
u
g
g
e
s
t
o
th
er
r
elev
a
n
t
s
er
v
i
ce
s
w
h
ic
h
s
u
it
s
th
eir
n
ee
d
s
.
T
h
e
s
y
s
te
m
is
ca
te
g
o
r
ized
as
f
i
v
e
d
if
f
er
en
t
co
m
p
o
n
e
n
t
s
:
a.
C
r
a
w
ler
is
a
b
o
t
w
h
ich
a
u
to
m
a
ticall
y
b
r
o
w
s
es t
h
e
I
n
ter
n
et,
g
en
er
all
y
f
o
r
th
e
p
u
r
p
o
s
e
o
f
W
eb
in
d
ex
in
g
.
b.
I
d
en
tif
ier
is
u
s
ed
to
id
en
ti
f
y
i
f
a
w
eb
p
ag
e
is
g
en
u
i
n
e
clo
u
d
s
er
v
ice
b
ased
o
n
its
s
er
v
ice
s
co
r
e.
c.
I
n
d
ex
er
is
u
s
ed
to
r
eg
is
ter
a
cl
o
u
d
s
er
v
ice
w
h
ich
i
s
id
en
ti
f
ied
.
d.
Sear
ch
E
n
g
i
n
e
is
u
s
ed
to
b
r
o
w
s
e
f
o
r
clo
u
d
co
m
p
u
ti
n
g
p
r
o
d
u
cts.
e.
Re
co
m
m
e
n
d
er
is
u
s
ed
to
r
ec
o
m
m
en
d
b
o
th
co
n
te
n
t
-
b
ased
an
d
co
llab
o
r
ativ
e
r
ec
o
m
m
e
n
d
ati
o
n
s
.
Fro
m
t
h
e
u
s
er
’
s
o
u
tlo
o
k
,
t
h
e
y
w
il
l
v
is
it
th
e
C
SI
S
w
eb
p
ag
e
an
d
r
eg
i
s
ter
f
o
r
an
ac
co
u
n
t
.
On
ce
t
h
e
ac
co
u
n
t
i
s
r
eg
i
s
ter
ed
,
th
e
y
ar
e
p
r
o
v
id
ed
w
ith
s
ea
r
ch
u
tili
ties
in
w
h
ich
th
e
y
s
ea
r
c
h
f
o
r
clo
u
d
s
er
v
ices
a
n
d
r
ate
th
e
m
o
n
a
s
ca
le
o
f
o
n
e
to
ten
.
T
h
en
t
h
e
u
s
er
w
ill
b
e
r
ec
o
m
m
en
d
ed
a
lis
t
o
f
clo
u
d
s
er
v
ices
b
ased
o
n
t
h
eir
r
eq
u
ir
e
m
en
ts
.
So
m
e
o
f
th
e
r
ea
l
w
o
r
ld
s
ce
n
ar
io
s
,
o
f
h
o
w
th
e
s
y
s
te
m
ca
n
b
e
u
s
ed
:
a.
C
u
s
to
m
er
s
w
h
o
ar
e
u
s
i
n
g
Saa
S
p
r
o
d
u
c
ts
a
n
d
n
o
t
s
ati
s
f
ied
,
d
u
e
to
p
o
o
r
q
u
alit
y
v
i
s
it
t
h
e
C
S
I
S
w
eb
p
ag
e
a
n
d
r
ate
th
e
clo
u
d
p
r
o
d
u
ct
w
h
ic
h
t
h
e
y
h
a
v
e
b
ee
n
u
s
in
g
late
l
y
,
t
h
en
t
h
e
y
ar
e
r
ec
o
m
m
e
n
d
ed
o
th
er
s
i
m
i
lar
clo
u
d
s
er
v
ices b
ased
o
n
t
h
eir
r
atin
g
s
an
d
o
th
er
u
s
er
’
s
r
ati
n
g
s
.
b.
An
i
n
d
iv
id
u
al
w
h
o
i
s
n
e
w
to
clo
u
d
co
m
p
u
ti
n
g
an
d
w
i
s
h
e
s
t
o
u
s
e
a
clo
u
d
p
r
o
d
u
ct.
T
h
ey
v
is
it
t
h
e
w
eb
p
ag
e
o
f
C
SIS
s
y
s
te
m
a
n
d
e
n
ter
a
s
e
ar
ch
q
u
er
y
i
n
s
ea
r
ch
o
f
clo
u
d
p
r
o
d
u
cts.
A
li
s
t
o
f
clo
u
d
p
r
o
d
u
cts
is
d
is
p
la
y
ed
ac
co
r
d
in
g
to
th
eir
r
an
k
s
,
to
th
e
u
s
er
.
T
h
e
u
s
er
w
o
u
ld
ch
o
o
s
e
a
p
r
o
d
u
ct
b
ased
o
n
th
eir
r
eq
u
ir
e
m
e
n
t
s
,
o
n
ce
th
e
u
s
er
c
h
o
o
s
es
a
p
r
o
d
u
ct,
th
e
C
SIS
s
y
s
te
m
w
o
u
ld
s
u
g
g
e
s
t
o
th
er
p
r
o
d
u
cts
t
h
at
i
n
te
g
r
ate
w
it
h
th
e
c
u
r
r
en
t
ch
o
s
en
s
er
v
ice
a
n
d
th
e
o
n
e
w
i
t
h
th
e
h
i
g
h
e
s
t r
atin
g
i
s
d
is
p
la
y
e
d
.
2
.
1
.
Arc
hite
ct
ure
C
SIS
s
y
s
te
m
ar
ch
itect
u
r
e
is
t
h
e
co
n
ce
p
tu
a
l
m
o
d
el
t
h
at
d
ef
in
es
t
h
e
s
tr
u
ct
u
r
e,
b
eh
a
v
io
r
,
an
d
m
o
r
e
v
ie
w
s
o
f
a
s
y
s
te
m
.
A
b
asic o
v
er
v
ie
w
o
f
t
h
e
C
SI
S s
y
s
te
m
ar
ch
itect
u
r
e
is
d
is
p
la
y
ed
in
Fi
g
u
r
e
1
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
J
E
C
E
Vo
l.
7
,
No
.
1
,
Feb
r
u
ar
y
2
0
1
7
:
5
13
–
5
20
515
F
ig
u
r
e
1
.
C
SIS
A
r
ch
i
tectu
r
e
2
.
1
.
1
.
Cra
w
ler
T
h
e
p
u
r
p
o
s
e
o
f
cr
a
w
ler
is
to
f
in
d
th
e
co
n
te
n
t
o
f
u
n
k
n
o
w
n
web
s
ites
th
at
ca
n
b
e
f
ed
as
an
i
n
p
u
t
to
th
e
I
d
en
tif
ier
.
I
t
is
ex
p
ec
ted
to
cr
a
w
l
m
o
r
e
n
u
m
b
er
o
f
w
eb
p
ag
es
as
m
aj
o
r
ity
o
f
th
e
w
eb
s
ite
s
v
i
s
ited
w
o
n
’
t
b
e
a
g
en
u
i
n
e
clo
u
d
s
er
v
ice
w
eb
s
ite
,
h
en
ce
i
t r
eq
u
ir
es
m
o
r
e
ti
m
e
b
ef
o
r
e
an
ac
t
u
al
s
er
v
ice
i
s
id
en
t
if
ied
.
T
h
er
ef
o
r
e,
to
i
m
p
r
o
v
e
th
e
e
f
f
icien
c
y
o
f
cr
a
w
li
n
g
,
d
is
tr
ib
u
ted
cr
a
w
ler
s
ar
e
u
s
ed
.
I
n
itiall
y
a
li
s
t
o
f
b
lo
g
s
an
d
d
ir
ec
to
r
ies
ar
e
co
m
p
iled
w
it
h
w
eb
li
n
k
s
o
f
c
lo
u
d
s
er
v
ice
s
,
b
ef
o
r
e
cr
a
w
li
n
g
to
t
h
e
I
n
ter
n
et,
a
s
it
w
o
u
ld
b
e
u
n
w
i
s
e
to
w
ild
l
y
f
o
llo
w
U
R
L
i
n
s
ea
r
c
h
o
f
cl
o
u
d
s
er
v
ice
s
.
T
h
er
e
is
al
s
o
a
p
o
s
s
ib
ilit
y
o
f
r
ep
etiti
v
e
d
o
w
n
lo
ad
in
g
o
f
s
a
m
e
w
eb
s
i
tes
w
h
ile
cr
a
w
li
n
g
th
e
I
n
ter
n
et.
T
o
p
r
ev
en
t
t
h
i
s
f
r
o
m
h
ap
p
en
i
n
g
,
t
h
e
cr
a
w
ler
ca
ch
es
a
co
p
y
o
f
th
e
w
eb
s
i
tes
v
i
s
ited
.
T
h
i
s
m
a
y
r
e
s
u
lt
i
n
an
o
v
er
lo
ad
o
f
ca
ch
e
d
ata;
h
en
ce
th
e
ca
ch
e
is
clea
r
ed
w
h
e
n
th
e
clo
u
d
p
r
o
d
u
ct
is
eith
er
id
en
ti
f
ied
o
r
r
eg
is
ter
ed
.
2
.
1
.
2
.
I
dentif
ier
T
h
e
g
o
al
o
f
I
d
en
t
if
ier
is
to
id
en
ti
f
y
a
g
iv
e
n
w
eb
p
ag
e
as
a
g
e
n
u
i
n
e
c
lo
u
d
p
r
o
d
u
ct
an
d
p
r
o
v
i
d
e
a
s
co
r
e
b
ased
o
n
th
eir
lev
el
o
f
s
er
v
ice.
T
h
is
h
elp
s
t
h
e
s
y
s
te
m
s
to
cr
a
w
l o
v
er
I
n
ter
n
et
i
n
s
ea
r
c
h
o
f
cl
o
u
d
s
er
v
ices
w
h
ic
h
ca
n
b
e
s
ea
r
ch
ed
a
n
d
r
ec
o
m
m
e
n
d
ed
.
I
n
d
iv
id
u
all
y
it
w
o
u
ld
b
e
d
if
f
ic
u
lt
to
ch
ec
k
a
clo
u
d
s
er
v
ice
a
s
m
aj
o
r
ity
o
f
clo
u
d
s
er
v
ices
r
eq
u
ir
e
s
ce
r
tif
i
ca
tio
n
to
a
cc
ess
.
R
at
h
er
,
u
n
i
v
er
s
all
y
ac
ce
s
s
ib
le
h
o
m
ep
ag
e
i
s
ex
a
m
i
n
ed
if
it
a
p
o
ten
tial
clo
u
d
s
er
v
ice.
T
h
e
b
asic
f
u
n
d
a
m
e
n
tal
is
to
co
m
p
ar
e
th
e
h
o
m
ep
ag
e
cr
a
w
led
w
i
th
a
p
o
ten
tial
w
eb
s
ite
an
d
f
i
n
d
th
e
s
i
m
i
lar
it
y
b
et
w
ee
n
.
T
o
ac
co
m
p
lis
h
th
e
s
i
m
ilar
it
y
,
th
e
C
SIS
s
y
s
te
m
is
i
n
itial
l
y
f
e
d
w
it
h
v
ar
io
u
s
UR
L
o
f
k
n
o
wn
g
e
n
u
in
e
clo
u
d
s
er
v
ice.
W
h
en
th
e
s
y
s
te
m
is
ac
tiv
a
ted
,
it
v
is
it
s
th
e
h
o
m
ep
ag
e
o
f
ev
er
y
U
R
L
s
ep
ar
atel
y
an
d
s
to
r
es
th
e
k
e
y
w
o
r
d
s
w
h
ic
h
ap
p
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r
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alo
n
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it
h
th
e
f
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eq
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en
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th
e
w
o
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d
s
ac
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s
s
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er
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An
y
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d
w
i
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h
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t o
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ce
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Hig
h
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eq
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en
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ar
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t in
ter
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b
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t t
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at
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ca
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m
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b
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q
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1
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T
h
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o
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d
r
esp
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ile
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a
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tial
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d
p
r
o
d
u
ct.
T
h
e
r
an
d
o
m
w
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p
ag
e
is
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m
p
ar
ed
to
th
i
s
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r
o
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o
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e
th
e
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o
s
s
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ilit
y
t
h
at
g
iv
e
n
w
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p
ag
e
is
a
clo
u
d
p
r
o
d
u
ct.
T
h
is
co
m
p
ar
is
o
n
i
s
d
o
n
e
b
y
co
m
p
u
tin
g
t
h
e
s
i
m
i
lar
it
y
b
et
w
ee
n
r
a
n
d
o
m
w
eb
p
ag
e
(
w
)
a
n
d
g
en
u
i
n
e
clo
u
d
s
er
v
ice
(
g
)
.
B
o
th
w
eb
p
ag
e
(
a)
an
d
g
en
u
i
n
e
clo
u
d
s
er
v
ice
(
b
)
ca
n
b
e
r
ep
r
esen
ted
as
ter
m
f
r
eq
u
en
c
y
–
i
n
v
er
s
e
d
o
cu
m
en
t
f
r
eq
u
e
n
c
y
(
TF
-
I
DF)
v
ec
to
r
s
⃗
⃗
⃗
a
an
d
⃗
⃗
⃗
b
o
f
w
ei
g
h
ts
(
s
co
r
es).
T
h
ese
t
wo
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
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C
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I
SS
N:
2088
-
8708
C
S
I
S
:
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ca
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516
v
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to
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s
ar
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id
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t
w
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all
ite
m
s
co
-
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b
y
b
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h
e
w
eb
p
ag
es
[
6
]
.
T
h
e
s
i
m
ilar
it
y
m
ea
s
u
r
e
s
i
m
(
a,
b
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is
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n
b
y
E
q
u
atio
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2.
∑
(
)
∑
(
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∑
(
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(
2
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T
o
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lcu
late
th
e
s
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m
ilar
it
y
m
e
asu
r
e,
t
h
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l
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w
it
h
t
h
e
s
ee
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ed
clo
u
d
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er
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ices
i
s
co
m
p
ar
ed
w
i
th
t
h
e
id
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l
p
r
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f
ile.
W
h
en
E
q
u
atio
n
3
is
s
ati
s
f
ied
b
y
s
co
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e
w
,
a
cl
o
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d
p
r
o
d
u
ct
is
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etec
ted
w
h
er
e
q
is
s
et
o
f
all
clo
u
d
p
r
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d
u
ct
s
co
r
es.
´
(
3
)
2
.
1
.
3
.
I
nd
ex
er
An
I
n
d
ex
er
i
n
d
ex
e
s
a
w
eb
s
ite
if
it
i
s
g
e
n
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i
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e
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lo
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d
p
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u
ct
an
d
s
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in
t
h
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d
atab
ase
o
f
t
h
e
C
SI
S
S
y
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te
m
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F
ig
u
r
e
2
d
ep
icts
th
e
A
r
c
h
itect
u
r
e
o
f
I
n
d
ex
er
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Fig
u
r
e
2
.
A
r
ch
itectu
r
e
o
f
I
n
d
ex
er
I
n
itiall
y
th
e
I
n
d
ex
er
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ar
s
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th
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w
eb
p
ag
e
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e
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u
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d
a
m
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tal
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etails
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c
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ct
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m
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tr
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to
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atab
ase
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e
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I
D)
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h
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S.
On
t
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ar
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t,
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An
al
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er
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o
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it
h
m
i
s
u
s
ed
to
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te
m
ea
ch
w
o
r
d
[
7
]
an
d
th
e
Do
cu
m
e
n
t
f
r
eq
u
e
n
c
y
(
df
)
is
d
eter
m
i
n
ed
f
o
r
th
e
p
ag
e.
Usi
n
g
E
q
u
at
io
n
(
4
)
,
th
e
in
v
er
t
ed
d
o
cu
m
e
n
t
f
r
eq
u
e
n
c
y
(
id
f
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i
s
d
eter
m
i
n
ed
o
n
iter
atin
g
b
asi
s
,
w
h
er
e
T
is
th
e
to
tal
n
u
m
b
er
o
f
clo
u
d
p
r
o
d
u
cts
an
d
id
f
is
d
eter
m
in
e
d
u
s
in
g
d
o
cu
m
e
n
t
f
r
eq
u
e
n
c
y
(
df
)
f
o
r
a
p
ar
ticu
lar
ter
m
k
[
8
]
.
(
4
)
T
h
e
ter
m
i
n
d
ex
I
D
an
d
co
r
r
e
s
p
o
n
d
in
g
f
r
eq
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e
n
c
y
ar
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s
to
r
e
d
as
an
ite
m
,
alo
n
g
w
it
h
th
e
id
f
,
in
an
i
n
v
er
ted
in
d
ex
,
as i
n
Fi
g
u
r
e
3
.
Fig
u
r
e
3
.
I
n
d
ex
er
P
o
s
tin
g
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
J
E
C
E
Vo
l.
7
,
No
.
1
,
Feb
r
u
ar
y
2
0
1
7
:
5
13
–
5
20
517
2
.
1
.
4
.
Sea
rc
h E
ng
ine
I
t
h
elp
s
th
e
u
s
er
to
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s
il
y
f
i
n
d
clo
u
d
p
r
o
d
u
cts
s
to
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ed
in
th
e
d
atab
ase
b
ased
o
n
s
p
ec
if
ic
q
u
er
y
o
r
ter
m
w
h
ic
h
in
cl
u
d
es e
it
h
er
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e
n
a
m
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o
f
th
e
p
r
o
d
u
ct
o
r
s
p
ec
if
ic
f
ea
tu
r
e
th
e
y
r
eq
u
ir
e.
W
h
en
th
e
s
ea
r
ch
en
g
i
n
e
r
ec
e
iv
es
a
q
u
er
y
,
L
e
x
ical
An
al
y
s
is
i
s
d
o
n
e
a
n
d
t
h
e
r
e
s
u
lt
in
g
ter
m
s
ar
e
s
te
m
m
ed
.
Us
in
g
E
q
u
atio
n
5
,
th
e
id
f
an
d
t
h
e
f
r
eq
u
en
c
y
f
,
o
f
th
e
ter
m
i
s
ca
lcu
lated
f
o
r
ev
er
y
ter
m
in
th
e
d
o
cu
m
en
t.
(
5
)
T
o
r
an
k
th
e
r
esu
lts
,
Vec
to
r
Sp
ac
e
Mo
d
el
is
u
s
ed
w
h
er
e
th
e
s
ea
r
ch
q
u
er
y
,
r
is
co
m
p
a
r
ed
w
it
h
th
e
ca
lcu
lated
tf
-
id
f
w
ei
g
h
t
w
o
f
t
h
e
d
o
cu
m
e
n
t
d
.
Fo
r
i
n
s
t
an
ce
,
is
th
e
w
ei
g
h
t
o
f
th
e
w
o
r
d
in
d
o
cu
m
en
t
y
[
8
]
.
(
)
‖
‖
‖
‖
∑
∑
∑
(
6
)
P
r
o
v
id
ed
a
lar
g
e
n
u
m
b
er
o
f
c
lo
u
d
s
er
v
ice
s
,
i
f
t
h
e
s
ea
r
ch
q
u
er
y
in
cl
u
d
es
a
n
y
o
f
t
h
e
clo
u
d
s
er
v
ice
’
s
n
a
m
e
i
t is s
h
o
w
n
f
ir
s
t o
f
t
h
e
r
esu
lt
s
.
2
.
1
.
5
.
Rec
o
m
m
en
der
I
t
is
th
e
p
r
i
m
ar
y
p
ar
t
o
f
t
h
e
C
SIS
S
y
s
te
m
w
h
ic
h
u
s
es
a
h
y
b
r
id
r
ec
o
m
m
en
d
atio
n
ap
p
r
o
ac
h
w
h
ic
h
is
a
co
m
b
i
n
atio
n
o
f
b
o
th
co
n
ten
t
-
b
ased
as
w
e
ll a
s
co
llab
o
r
ativ
e
r
ec
o
m
m
e
n
d
atio
n
s
.
T
h
e
h
y
b
r
id
ap
p
r
o
ac
h
is
u
s
ed
s
o
as to
r
em
o
v
e
th
e
d
r
a
w
b
ac
k
s
o
f
u
s
i
n
g
o
t
h
er
ap
p
r
o
ac
h
es in
d
iv
i
d
u
all
y
[
6
]
.
I
n
co
n
te
n
t
-
b
ased
r
ec
o
m
m
e
n
d
atio
n
ap
p
r
o
ac
h
,
u
s
er
u
s
es
th
e
s
ea
r
ch
q
u
er
y
to
f
in
d
t
h
e
clo
u
d
p
r
o
d
u
ct,
it
al
s
o
r
ec
o
m
m
e
n
d
s
o
th
er
p
r
o
d
u
cts
th
at
ar
e
r
elate
d
to
th
e
q
u
er
y
.
T
h
is
m
a
y
h
elp
th
e
u
s
er
to
f
in
d
clo
u
d
s
er
v
ice
b
ased
o
n
th
eir
r
eq
u
ir
e
m
en
t.
As
s
tated
b
e
f
o
r
e,
it
is
co
m
m
o
n
t
h
at
u
s
er
m
a
y
b
e
h
i
g
h
l
y
i
n
t
er
ested
w
i
th
t
h
e
p
r
o
d
u
ct
b
ase
d
o
n
th
eir
in
te
g
r
it
y
w
it
h
a
n
o
th
er
p
r
o
d
u
ct,
h
e
n
ce
it
s
h
o
u
ld
a
ls
o
b
e
r
ec
o
m
m
e
n
d
ed
.
W
ith
o
u
t
h
u
m
an
i
n
ter
ac
tio
n
it
is
i
m
p
o
s
s
ib
le
to
f
i
n
d
w
h
et
h
er
a
p
r
o
d
u
ct
is
in
teg
r
ated
w
it
h
a
n
o
th
er
p
r
o
d
u
ct.
R
ath
er
,
it
h
as
b
ee
n
f
o
u
n
d
th
at
clo
u
d
s
er
v
ice
w
h
ich
h
as
i
n
teg
r
atio
n
w
it
h
an
o
t
h
er
clo
u
d
s
er
v
ice
u
s
u
all
y
m
en
t
io
n
s
it
i
n
th
e
h
o
m
ep
ag
e.
T
h
is
clo
u
d
s
er
v
ice
is
s
ea
r
ch
ed
u
s
i
n
g
s
ea
r
ch
en
g
in
e
b
y
u
s
i
n
g
it
s
n
a
m
e
an
d
co
r
r
esp
o
n
d
in
g
r
es
u
lts
ar
e
r
ec
o
m
m
en
d
e
d
,
ig
n
o
r
i
n
g
it
s
elf
.
T
h
is
ap
p
r
o
ac
h
m
a
y
h
a
v
e
li
m
ited
p
er
s
p
ec
ti
v
e
as
s
o
m
e
s
er
v
ice
s
m
a
y
h
av
e
c
o
m
p
le
x
d
escr
ip
ti
v
e
n
a
m
e
s
.
E
v
e
n
th
o
u
g
h
it i
s
a
s
i
m
p
le
m
e
th
o
d
,
it s
h
o
w
s
r
elev
a
n
t
r
esu
lt
s
.
Un
li
k
e
co
n
te
n
t
-
b
ased
ap
p
r
o
ac
h
,
co
llab
o
r
ativ
e
r
ec
o
m
m
e
n
d
atio
n
ap
p
r
o
ac
h
p
r
e
d
icts
th
e
r
elev
an
t
ite
m
s
f
o
r
th
e
u
s
er
b
ased
o
n
o
th
er
u
s
er
’
s
r
atin
g
s
[
6
]
.
T
o
f
ac
ilit
ate
co
llab
o
r
ativ
e
r
ec
o
m
m
en
d
atio
n
ap
p
r
o
ac
h
,
th
e
C
SIS
S
y
s
te
m
e
n
ab
les t
h
e
u
s
er
to
g
iv
e
r
atin
g
s
f
o
r
th
e
clo
u
d
s
er
v
ice
s
.
T
h
e
f
ir
s
t
m
et
h
o
d
o
f
co
llab
o
r
ativ
e
r
ec
o
m
m
e
n
d
atio
n
ap
p
r
o
ac
h
is
th
at
it
r
ec
o
m
m
e
n
d
s
o
th
er
clo
u
d
s
er
v
ices
th
at
ar
e
h
i
g
h
l
y
r
ated
b
y
o
t
h
er
u
s
er
s
w
h
o
h
a
s
g
i
v
en
h
ig
h
r
ati
n
g
s
f
o
r
th
e
s
a
m
e
clo
u
d
s
er
v
ice
w
h
ic
h
i
s
b
ee
n
v
ie
w
ed
b
y
t
h
e
u
s
er
.
T
h
e
s
ec
o
n
d
m
eth
o
d
o
f
co
llab
o
r
ativ
e
r
ec
o
m
m
e
n
d
atio
n
ap
p
r
o
ac
h
is
t
h
at
it
f
in
d
s
o
th
er
u
s
er
s
s
i
m
ilar
to
th
e
cu
r
r
en
t u
s
er
b
y
u
s
in
g
co
s
i
n
e
s
i
m
i
lar
it
y
m
ea
s
u
r
e
[
9
]
,
m
e
n
t
io
n
ed
in
E
q
u
atio
n
2
.
W
h
en
t
h
e
r
ec
o
m
m
en
d
atio
n
is
r
eq
u
ir
ed
,
th
i
s
s
i
m
ilar
it
y
b
et
w
ee
n
t
h
e
c
u
r
r
en
t
u
s
er
a
n
d
o
th
er
u
s
er
i
s
ca
lcu
lated
,
to
in
cr
ea
s
e
th
e
p
er
f
o
r
m
a
n
ce
t
h
ese
s
i
m
ilar
iti
es
is
ca
lc
u
lated
b
ef
o
r
e
an
d
o
n
l
y
r
ec
alc
u
lated
p
er
io
d
ically
.
B
y
co
m
b
i
n
i
n
g
t
h
e
co
llab
o
r
ativ
e
an
d
co
n
ten
t
-
b
ased
r
ec
o
m
m
en
d
atio
n
ap
p
r
o
ac
h
,
th
e
w
ei
g
h
t
ed
av
er
ag
e
is
d
eter
m
i
n
ed
f
o
r
ea
ch
r
ec
o
m
m
en
d
atio
n
.
I
n
it
iall
y
,
d
u
e
to
less
n
u
m
b
er
o
f
u
s
er
s
an
d
r
a
tin
g
s
,
co
n
ten
t
-
b
ased
ap
p
r
o
ac
h
s
ee
m
s
s
u
p
er
io
r
th
a
n
co
llab
o
r
ativ
e
ap
p
r
o
ac
h
,
b
u
t a
s
th
e
u
s
er
’
s
p
o
p
u
latio
n
in
cr
ea
s
e
s
,
t
h
e
co
llab
o
r
ativ
e
r
ec
o
m
m
e
n
d
atio
n
ap
p
r
o
ac
h
r
esu
lts
w
i
ll i
n
cr
ea
s
e
an
d
w
ill b
e
m
o
s
t a
cc
u
r
ate
[
1
0
]
.
3.
RE
SU
L
T
S
A
ND
AN
AL
Y
SI
S
Fo
r
th
e
b
ac
k
en
d
i
m
p
le
m
e
n
tat
io
n
o
f
C
SIS
s
y
s
te
m
,
J
av
a
w
it
h
No
d
e.
j
s
s
er
v
er
is
u
s
ed
.
Ne
ar
l
y
,
1
0
0
0
clo
u
d
p
r
o
d
u
cts
h
a
v
e
b
ee
n
s
o
u
g
h
t
o
u
t
f
o
r
an
d
i
n
d
ex
ed
a
n
d
f
e
w
a
lp
h
a
te
s
ter
s
h
av
e
u
s
ed
th
e
s
y
s
te
m
to
cr
ea
te
an
in
iti
al
p
r
o
f
ile
o
f
u
s
er
s
f
o
r
in
it
i
al
r
ec
o
m
m
e
n
d
atio
n
s
.
R
ef
er
Fi
g
u
r
e
4
an
d
Fi
g
u
r
e
5
f
o
r
a
s
cr
ee
n
s
h
o
t
o
f
w
eb
b
ased
u
s
er
i
n
ter
f
ac
e
f
o
r
t
h
e
C
SIS
s
y
s
te
m
.
Du
r
i
n
g
t
h
e
test
in
g
o
f
C
SI
S
I
d
en
ti
f
ier
,
t
w
e
n
t
y
cl
o
u
d
s
er
v
ice
s
w
er
e
r
an
d
o
m
l
y
ch
o
o
s
e
n
w
it
h
a
f
u
r
t
h
er
th
ir
teen
w
eb
p
ag
e
s
co
v
er
i
n
g
d
if
f
er
e
n
t
g
en
r
es.
Fo
r
ea
ch
p
ar
ticu
lar
w
eb
p
ag
e,
co
r
r
esp
o
n
d
in
g
s
co
r
e
w
a
s
ca
lcu
lated
an
d
v
er
if
ied
to
s
ee
if
it
s
atis
f
ies
E
q
u
atio
n
3
.
T
h
e
r
esu
lt
s
o
f
th
e
ex
p
er
i
m
en
t
ar
e
s
h
o
w
n
i
n
T
ab
le
1
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
E
C
E
I
SS
N:
2088
-
8708
C
S
I
S
:
C
lo
u
d
S
ervice
I
d
en
tifi
ca
tio
n
S
ystem
(
S
id
d
h
a
r
th
A
r
u
n
)
518
T
ab
le
1
.
C
lo
u
d
P
r
o
d
u
ct
I
d
en
tifi
er
T
est R
esu
lts
Ty
p
e
o
f
t
h
e
W
e
b
si
t
e
T
o
t
a
l
n
u
m
b
e
r
o
f
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e
b
si
t
e
s
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u
mb
e
r
i
d
e
n
t
i
f
i
e
d
a
s
C
l
o
u
d
P
r
o
d
u
c
t
A
c
c
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r
a
c
y
(
%
)
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l
o
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d
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r
o
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c
t
20
16
80
O
t
h
e
r
13
8
6
1
.
5
T
o
t
a
l
33
24
7
2
.
7
3
Fig
u
r
e
4
.
C
SIS
User
I
n
ter
f
ac
e
Fig
u
r
e
5
.
C
SIS
User
I
n
ter
f
ac
e
T
h
e
r
esu
lt
o
f
th
e
e
x
p
er
i
m
e
n
t
d
o
n
e,
s
h
o
w
s
t
h
at
t
h
e
o
v
er
all
ac
cu
r
ac
y
o
f
t
h
e
C
SIS
I
d
en
ti
f
ier
i
s
7
2
.
7
3
%
.
Fu
r
t
h
er
w
o
r
k
h
as to
b
e
d
o
n
e
to
in
cr
ea
s
e
th
e
ac
c
u
r
ac
y
o
f
th
e
s
y
s
te
m
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
J
E
C
E
Vo
l.
7
,
No
.
1
,
Feb
r
u
ar
y
2
0
1
7
:
5
13
–
5
20
519
T
h
e
s
ea
r
ch
en
g
i
n
e
h
as
b
ee
n
t
ested
u
s
i
n
g
a
w
id
e
v
ar
iet
y
o
f
s
ea
r
ch
ter
m
s
.
I
ts
p
r
ec
is
io
n
h
as
b
ee
n
ca
l
cu
lated
u
s
i
n
g
th
e
E
q
u
at
io
n
7
.
(
7
)
T
h
e
r
esu
lts
h
av
e
s
h
o
w
n
t
h
at
t
h
e
p
r
ec
is
io
n
o
f
th
e
s
ea
r
ch
e
n
g
in
e
v
ar
ie
s
d
ep
en
d
in
g
o
n
t
h
e
n
atu
r
e
o
f
t
h
e
s
ea
r
ch
q
u
er
y
.
Q
u
er
ies
th
at
co
n
tai
n
ter
m
s
th
a
t
ar
e
co
m
m
o
n
l
y
ass
o
ciate
d
w
it
h
all
clo
u
d
p
r
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d
u
cts
is
a
p
ar
ticu
lar
ar
ea
in
w
h
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h
t
h
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s
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r
ch
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in
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g
.
s
to
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ag
e,
s
ec
u
r
it
y
,
b
ac
k
u
p
.
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h
e
s
y
s
te
m
w
as
test
ed
b
y
ei
g
h
t
u
s
er
s
w
it
h
r
ea
l
w
o
r
ld
s
ce
n
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io
s
,
w
h
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e
b
o
th
e
x
p
er
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ce
d
as
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ell
a
s
n
o
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ie
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ce
d
u
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y
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Fi
v
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o
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er
s
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ad
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ce
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s
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g
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d
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er
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ice
s
w
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ile
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h
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ai
n
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ee
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p
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ce
.
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h
e
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u
lts
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f
th
e
e
x
p
er
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m
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n
t a
r
e
s
h
o
w
n
i
n
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ab
le
2
.
T
ab
le
2
.
R
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o
m
m
en
d
er
T
est R
esu
lt
s
U
se
r
Ty
p
e
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u
mb
e
r
o
f
R
e
c
o
mm
e
n
d
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t
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o
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l
t
s
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mb
e
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f
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se
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l
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t
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se
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p
e
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se
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8
7
T
h
e
r
esu
lt
o
f
t
h
e
ex
p
er
i
m
e
n
t
s
h
o
w
t
h
at,
o
n
a
v
er
ag
e,
t
h
e
p
r
ec
is
io
n
o
f
th
e
R
ec
o
m
m
e
n
d
er
s
y
s
te
m
is
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ig
h
er
f
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ex
p
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n
ce
d
u
s
er
s
th
an
i
n
ex
p
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n
ce
d
u
s
er
s
.
T
h
i
s
r
es
u
lt
i
s
e
x
p
ec
ted
as
e
x
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er
i
en
ce
d
u
s
er
s
w
o
u
ld
h
av
e
b
ee
n
ab
le
to
r
ate
ex
is
tin
g
s
er
v
ices
t
h
at
th
e
y
u
s
e
a
n
d
th
er
ef
o
r
e
it
w
o
u
ld
h
av
e
r
e
co
m
m
e
n
d
ed
r
esu
lts
d
er
iv
ed
f
r
o
m
co
llab
o
r
ativ
e
m
eth
o
d
s
.
Fo
r
f
u
r
t
h
er
i
m
p
r
o
v
e
m
en
t
o
f
t
h
e
R
ec
o
m
m
en
d
er
S
y
s
t
e
m
,
C
liq
u
es
-
b
ased
Data
S
m
o
o
t
h
i
n
g
A
p
p
r
o
ac
h
[
1
1
]
o
r
C
lu
s
ter
i
n
g
b
ased
ap
p
r
o
ac
h
[
1
2
]
ca
n
b
e
i
m
p
le
m
en
ted
,
s
o
th
at
t
h
e
p
r
ec
is
io
n
w
il
l b
e
i
m
p
r
o
v
ed
an
d
th
e
s
y
s
te
m
w
ill b
e
p
r
ev
en
ted
f
r
o
m
d
ata
s
ca
r
cit
y
.
4.
CO
NCLU
SI
O
N
T
h
is
p
r
o
j
ec
t
h
elp
s
to
id
en
ti
f
y
b
etter
clo
u
d
s
er
v
ices
f
o
r
cu
s
to
m
er
s
b
ased
o
n
t
h
eir
n
ee
d
s
i
n
t
h
is
m
ar
k
e
t.
T
h
e
s
y
s
te
m
al
s
o
h
e
lp
s
t
h
e
u
s
er
s
w
h
o
ar
e
n
o
t
f
a
m
iliar
w
i
t
h
clo
u
d
s
er
v
ices
b
y
m
a
k
i
n
g
i
t
les
s
i
n
tr
icate
an
d
co
m
p
le
x
.
I
t
h
as
a
h
i
g
h
s
co
p
e
in
th
e
m
ar
k
e
t
an
d
h
a
s
a
p
o
ten
ti
al
s
o
lu
tio
n
in
d
is
co
v
er
y
o
f
n
e
w
clo
u
d
p
r
o
d
u
cts
to
th
e
c
u
s
to
m
er
s
.
T
o
f
u
r
th
er
i
m
p
r
o
v
e
th
e
ac
c
u
r
ac
y
o
f
C
lo
u
d
Ser
v
ice
I
d
en
tific
atio
n
S
y
s
te
m
(
C
SIS)
,
cl
u
s
ter
in
g
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ased
ap
p
r
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Evaluation Warning : The document was created with Spire.PDF for Python.