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Vo
l.
11
,
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.
5
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Octo
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er
202
1
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p
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4
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SS
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2088
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8708
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DOI
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1
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v
11
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h
ttp
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//ij
ec
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ia
esco
r
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co
m
NLP
-
ba
sed
perso
na
l learning
as
sis
tant f
o
r scho
o
l ed
u
ca
tion
Ann Ne
et
hu
M
a
t
hew
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Ro
hin
i V
.
,
J
o
y
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s
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De
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Co
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p
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C
HRIST
(De
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e
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iv
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rsity
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d
ia
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nfo
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a
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l
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ti
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p
a
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s
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lo
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c
o
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n
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rti
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telli
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d
n
a
tu
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g
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NL
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a
se
d
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telli
g
e
n
t
tu
t
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rin
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s
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ste
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(IT
S
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in
th
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n
d
a
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h
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o
ls.
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n
e
o
f
th
e
c
o
m
p
o
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e
n
ts
o
f
a
n
IT
S
is
a
lea
rn
in
g
a
ss
istan
t,
w
h
ich
c
a
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b
le
stu
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e
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y
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e
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d
,
w
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th
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y
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s
p
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se
a
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h
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il
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t
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s
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t
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su
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t
S
c
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tch
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c
ra
tch
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a
g
ra
p
h
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u
ti
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ty
u
se
d
to
tea
c
h
sc
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l
c
h
il
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re
n
t
h
e
c
o
n
c
e
p
ts o
f
p
ro
g
ra
m
m
in
g
).
B
y
th
e
u
se
o
f
a
n
o
p
e
n
so
u
rc
e
n
a
tu
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d
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d
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n
t
q
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to
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tb
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t
t
h
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g
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t
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p
lan
a
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ted
.
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lt
s
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o
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th
a
t
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in
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f
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su
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g
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t
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s d
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e
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a
c
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ra
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a
n
d
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o
w
s it
s p
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o
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u
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d
a
s a
c
lo
u
d
-
b
a
se
d
so
l
u
ti
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i
n
f
u
tu
r
e
.
K
ey
w
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s
:
I
n
telli
g
en
t tu
to
r
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g
s
y
s
te
m
ch
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t
Natu
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al
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g
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g
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p
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s
s
in
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R
asa
Scr
atch
T
h
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s
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rticle
u
n
d
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r th
e
CC B
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SA
li
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se
.
C
o
r
r
e
s
p
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nd
ing
A
uth
o
r
:
An
n
Nee
th
u
Ma
t
h
e
w
Dep
ar
t
m
en
t o
f
C
o
m
p
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ter
Scie
n
ce
C
HR
I
ST
(
Dee
m
ed
to
b
e
Un
iv
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s
it
y
)
B
en
g
al
u
r
u
,
Kar
n
a
tak
a.
5
6
0
0
2
9
-
I
n
d
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E
m
ail: a
n
n
.
m
at
h
e
w
@
r
es.c
h
r
i
s
tu
n
iv
er
s
it
y
.
i
n
1.
I
NT
RO
D
UCT
I
O
N
C
o
m
p
u
ter
s
p
la
y
s
an
i
m
p
o
r
tan
t
p
ar
t
in
o
u
r
li
v
es.
C
o
m
p
u
ter
s
ar
e
n
o
w
w
id
el
y
u
s
ed
f
o
r
ed
u
ca
tio
n
a
l
p
u
r
p
o
s
es
li
k
e
les
s
o
n
tu
to
r
in
g
,
lan
g
u
a
g
e
test
i
n
g
,
d
iag
n
o
s
i
n
g
er
r
o
r
s
an
d
also
f
o
r
d
o
cu
m
e
n
ts
ar
ch
i
v
al.
T
h
is
h
a
s
led
to
m
a
n
y
r
esear
ch
er
s
t
h
i
n
k
ab
o
u
t
d
esig
n
i
n
g
a
n
i
n
telli
g
e
n
t
tu
to
r
in
g
s
y
s
te
m
(
I
T
S).
T
h
ese
in
telli
g
e
n
t
t
u
to
r
in
g
s
y
s
te
m
s
i
m
itate
o
n
e
-
to
-
o
n
e
t
u
to
r
in
g
to
d
eliv
er
th
e
co
n
ten
t
in
th
e
lear
n
i
n
g
m
ater
ial
b
etter
th
an
u
s
i
n
g
a
clas
s
r
o
o
m
e
n
v
ir
o
n
m
e
n
t.
A
r
ti
f
ic
ial
in
telli
g
e
n
ce
(
A
I
)
p
la
y
s
a
m
aj
o
r
r
o
le
in
u
n
d
er
s
ta
n
d
in
g
an
d
in
in
ter
p
r
eti
n
g
t
h
e
h
u
m
a
n
lan
g
u
ag
e
i
n
o
r
d
er
to
d
e
v
elo
p
lear
n
in
g
ap
p
licatio
n
.
A
I
h
a
s
b
ee
n
ad
o
p
ted
b
y
m
an
y
ed
u
ca
tio
n
al
in
s
tit
u
tio
n
s
i
n
v
ar
io
u
s
f
o
r
m
s
f
r
o
m
a
w
eb
b
a
s
ed
o
n
lin
e
ed
u
ca
tio
n
s
y
s
te
m
to
a
w
eb
b
a
s
ed
ch
atb
o
ts
[
1
]
.
I
t
d
eter
m
i
n
e
s
th
e
s
t
u
d
en
t
’
s
le
v
el
o
f
co
m
p
e
ten
ce
a
n
d
ad
ap
t
th
e
co
m
p
u
ter
r
esp
o
n
s
es
to
s
tu
d
e
n
t
in
p
u
t.
T
h
e
i
n
tell
ig
e
n
t
t
u
to
r
i
n
g
s
y
s
te
m
(
I
T
S)
u
s
es
N
L
P
tech
n
iq
u
e
to
p
r
o
ce
s
s
an
d
ac
ce
s
s
s
t
u
d
en
t
s
te
x
t
in
p
u
t
[
2
]
.
T
h
e
in
t
elli
g
e
n
t
t
u
to
r
in
g
s
y
s
te
m
p
r
o
v
id
es
t
h
e
s
t
u
d
en
ts
w
it
h
a
n
in
ter
ac
tiv
e
lear
n
in
g
e
n
v
ir
o
n
m
e
n
t.
An
I
T
S
h
elp
s
to
id
e
n
ti
f
y
th
e
g
ap
s
in
s
t
u
d
en
t
k
n
o
w
led
g
e
a
n
d
als
o
h
elp
s
to
p
r
o
v
id
e
p
er
s
o
n
alize
d
in
s
tr
u
ctio
n
b
ased
o
n
s
tu
d
en
t
k
n
o
w
led
g
e
le
v
el
[
3
]
.
I
t
is
v
er
y
i
m
p
o
r
tan
t
f
o
r
t
h
e
s
y
s
te
m
to
p
r
o
v
id
e
ti
m
el
y
f
ee
d
b
ac
k
w
h
ich
w
o
u
l
d
en
h
a
n
ce
th
e
lear
n
i
n
g
e
x
p
er
ien
ce
[
4
]
.
NL
P
is
ab
o
u
t
b
u
il
d
in
g
a
n
in
telli
g
en
t
m
ac
h
in
e
w
it
h
co
m
p
u
tatio
n
al
t
ec
h
n
o
lo
g
ies
a
n
d
li
n
g
u
is
tics
.
T
h
e
av
a
ilab
ilit
y
o
f
lar
g
e
a
m
o
u
n
t
o
f
ed
u
ca
tio
n
all
y
-
r
elev
an
t
tex
t
h
a
v
e
i
n
cr
ea
s
ed
t
h
e
u
s
e
o
f
N
L
P
to
r
eso
lv
e
t
h
e
ch
alle
n
g
e
s
f
ac
ed
b
y
s
tu
d
e
n
ts
an
d
teac
h
er
s
[
5
]
.
A
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
n
g
I
SS
N:
2088
-
8708
N
LP
-
b
a
s
ed
p
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o
n
a
l le
a
r
n
in
g
a
s
s
is
ta
n
t fo
r
s
ch
o
o
l e
d
u
ca
tio
n
(
A
n
n
N
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th
u
Ma
th
ew
)
4523
q
u
esti
o
n
-
a
n
s
w
er
i
n
g
(
Q
A
)
s
y
s
t
e
m
f
i
n
d
s
p
r
ec
is
e
a
n
s
w
er
o
r
f
i
n
d
th
e
p
r
ec
is
e
p
o
r
tio
n
o
f
t
h
e
tex
t
f
r
o
m
a
g
iv
e
n
co
llectio
n
o
f
d
o
cu
m
en
t
s
,
w
h
e
n
th
e
u
s
er
p
o
s
es
a
q
u
er
y
.
Q
A
s
y
s
te
m
a
n
s
w
er
s
to
th
e
q
u
esti
o
n
s
as
k
ed
b
y
t
h
e
u
s
er
in
h
u
m
an
la
n
g
u
a
g
e.
T
h
e
an
s
wer
is
r
etr
iev
ed
f
r
o
m
eit
h
er
a
d
atab
ase
o
r
a
co
llectio
n
o
f
d
o
c
u
m
e
n
t
s
u
s
in
g
N
L
P
tech
n
iq
u
es [
6
]
.
C
h
atb
o
ts
ar
e
an
ar
ti
f
icial
i
n
telli
g
e
n
ce
(
A
I
)
co
n
v
er
s
atio
n
al
u
s
er
in
ter
f
ac
e
th
at
allo
w
u
s
er
s
to
co
m
m
u
n
icate
w
it
h
s
er
v
ices
u
s
i
n
g
a
m
es
s
ag
in
g
ap
p
licatio
n
.
E
liza,
A
l
ice,
J
ab
b
er
w
ac
k
y
[
7
]
a
r
e
f
e
w
ea
r
l
y
ch
atb
o
ts
t
h
at
co
u
ld
s
i
m
u
late
th
e
h
u
m
a
n
i
n
ter
ac
tio
n
a
n
d
w
a
s
ab
le
to
h
a
v
e
co
n
v
er
s
ati
o
n
w
it
h
u
s
er
s
.
T
h
e
ch
atb
o
ts
ca
n
b
e
u
s
ed
i
n
f
o
r
m
a
l
ed
u
ca
tio
n
w
h
er
e
m
o
s
t
f
r
eq
u
en
t
q
u
esti
o
n
s
o
f
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h
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t
u
d
en
t
s
ca
n
b
e
a
n
s
w
er
ed
b
y
th
e
as
s
is
ta
n
t
c
h
atb
o
ts
t
h
u
s
u
s
ef
u
l
in
e
-
lear
n
in
g
cla
s
s
r
o
o
m
s
[
8
]
.
T
h
e
b
o
ts
b
r
in
g
a
p
r
o
d
u
ct
o
r
s
er
v
ice
in
to
a
n
y
m
es
s
ag
i
n
g
p
r
o
d
u
cts
s
u
c
h
as
S
lack
,
Face
b
o
o
k
v
ia
co
n
v
er
s
ati
o
n
an
d
ca
n
s
i
m
u
late
a
n
i
n
ter
ac
tio
n
w
it
h
a
u
s
er
i
n
n
atu
r
al
la
n
g
u
a
g
e
th
r
o
u
g
h
m
e
s
s
a
g
in
g
ap
p
licatio
n
.
C
h
atb
o
ts
r
ep
r
esen
t
th
e
ev
o
l
u
tio
n
o
f
q
u
esti
o
n
an
s
w
er
in
g
(
QA
)
s
y
s
te
m
s
u
s
in
g
N
L
P
an
d
it
r
esp
o
n
d
s
to
u
s
er
s
q
u
er
ie
s
in
n
atu
r
al
la
n
g
u
a
g
e.
W
h
e
n
a
ch
at
b
o
t
is
tr
ain
ed
w
it
h
lo
t o
f
d
ata,
m
o
r
e
s
ati
s
f
ac
tio
n
a
n
d
p
r
ec
is
io
n
is
r
ea
ch
ed
[
9
]
.
W
ith
t
h
is
in
cr
ea
s
ed
ad
o
p
tio
n
o
f
tec
h
n
o
lo
g
y
i
n
ed
u
ca
tio
n
,
we
s
ee
a
n
ee
d
to
al
s
o
en
s
u
r
e
t
h
a
t
q
u
alit
y
o
f
lear
n
in
g
is
n
o
t
co
m
p
r
o
m
i
s
ed
o
n
.
T
ec
h
n
o
lo
g
y
is
b
est
u
s
ed
as
a
s
u
p
p
o
r
tin
g
to
o
l
t
h
at
i
m
p
r
o
v
es
th
e
o
v
er
al
l
p
r
o
d
u
ctiv
it
y
a
n
d
ef
f
e
cti
v
e
n
ess
o
f
th
e
teac
h
er
s
an
d
p
r
o
v
id
es
a
b
etter
w
a
y
f
o
r
ed
u
ca
tio
n
co
v
er
ag
e
to
s
ca
le
u
p
an
d
g
r
o
w
.
I
n
t
h
is
p
ap
er
,
an
atte
m
p
t
is
m
ad
e
at
ex
p
lo
r
in
g
t
h
e
f
ea
s
ib
ilit
y
o
f
u
s
i
n
g
A
I
an
d
m
ac
h
i
n
e
lan
g
u
ag
e
(
ML
)
in
a
teac
h
in
g
as
s
is
tan
t
c
o
n
tex
t
to
cr
ea
te
a
n
ea
r
h
u
m
an
in
t
er
ac
tio
n
e
x
p
er
ien
ce
an
d
al
s
o
p
r
o
v
id
e
a
m
ea
n
s
f
o
r
teac
h
er
s
to
g
et
i
n
s
i
g
h
ts
a
b
o
u
t
ea
ch
s
t
u
d
en
t
’
s
lear
n
i
n
g
p
r
o
g
r
ess
.
A
n
u
n
d
er
s
ta
n
d
in
g
o
f
p
ast
w
o
r
k
i
n
t
h
i
s
s
p
ac
e
w
a
s
d
ev
elo
p
ed
b
y
d
o
in
g
a
r
ev
ie
w
o
f
e
x
i
s
ti
n
g
liter
atu
r
e
.
A
s
u
m
m
ar
y
o
f
t
h
e
liter
at
u
r
e
r
ev
ie
w
is
p
r
o
v
id
ed
in
s
ec
tio
n
2
.
Sectio
n
3
ex
p
lain
s
th
e
lear
n
i
n
g
ass
i
s
ta
n
t
ch
atb
o
t
d
esig
n
a
n
d
ass
o
ciate
d
p
r
o
to
ty
p
e
im
p
le
m
e
n
tatio
n
w
o
r
k
.
Sec
tio
n
4
co
v
er
s
t
h
e
r
es
u
lts
f
r
o
m
th
e
c
h
atb
o
t tr
ial
r
u
n
ex
p
er
i
m
e
n
ts
.
Sec
tio
n
5
ex
p
lai
n
s
t
h
e
co
n
cl
u
s
io
n
o
f
th
e
p
ap
er
.
2.
RELATED
W
O
RK
S
2
.
1
.
I
nte
llig
ent
t
uto
ring
s
y
s
t
e
m
i
n e
du
ca
t
io
n
T
h
e
i
n
telli
g
en
t
t
u
to
r
in
g
s
y
s
te
m
p
r
o
v
id
e
s
t
h
e
s
tu
d
e
n
ts
w
it
h
an
i
n
ter
ac
tiv
e
lear
n
i
n
g
e
n
v
ir
o
n
m
e
n
t.
T
h
e
in
telli
g
e
n
t
t
u
to
r
in
g
s
y
s
te
m
u
s
e
s
N
L
P
tech
n
iq
u
e
to
p
r
o
ce
s
s
a
n
d
ac
ce
s
s
s
t
u
d
en
ts
te
x
t
in
p
u
t
[
2
]
.
I
T
S
h
a
s
a
v
er
y
s
ig
n
i
f
ica
n
t
r
o
le
in
o
n
e
-
to
-
o
n
e
tu
to
r
in
g
a
n
d
b
y
in
co
r
p
o
r
atin
g
N
L
P
in
I
T
L
Ss
m
a
d
e
it
m
o
r
e
ca
p
ab
le
to
u
n
d
er
s
ta
n
d
th
e
lear
n
er
s
i
n
p
u
t t
ex
t a
n
d
also
p
r
o
v
id
e
d
p
ed
ag
o
g
ical
f
ee
d
b
ac
k
.
E
m
o
tio
n
al
in
te
lli
g
en
ce
is
i
n
co
r
p
o
r
ated
in
in
telli
g
e
n
t
t
u
to
r
in
g
s
y
s
te
m
s
[
1
0
]
th
at
u
s
e
d
i
f
f
er
e
n
t
s
t
y
les
to
teac
h
t
h
e
lear
n
i
n
g
m
ater
ial
to
s
tu
d
e
n
ts
.
A
n
e
m
o
tio
n
all
y
i
n
tel
lig
e
n
t
t
u
to
r
in
g
s
y
s
te
m
(
E
I
T
S)
f
i
n
d
s
t
h
e
e
m
o
tio
n
a
l
d
is
p
o
s
itio
n
o
f
th
e
lear
n
er
.
T
h
e
lear
n
er
’
s
f
ac
ial
ex
p
r
ess
io
n
,
m
o
u
s
e
m
o
v
e
m
e
n
ts
,
clic
k
s
a
n
d
s
p
ee
d
ar
e
s
o
m
e
o
f
th
e
in
p
u
t
s
to
th
e
t
u
to
r
in
g
s
y
s
t
e
m
to
an
al
y
s
e
th
e
e
m
o
tio
n
al
s
tate
o
f
th
e
s
t
u
d
en
t
.
A
v
ir
t
u
al
ass
is
tan
t
i
s
u
s
ed
to
m
o
tiv
a
te
t
h
e
s
t
u
d
en
t
s
f
o
r
s
o
lv
in
g
alg
eb
r
a
p
r
o
b
le
m
s
u
s
in
g
a
d
ialo
g
f
lo
w
to
o
l
[
1
1
]
.
I
t
g
iv
es
an
aler
t
ab
o
u
t
th
e
m
is
tak
e
s
m
ad
e
w
h
en
s
o
lv
i
n
g
alg
eb
r
a
r
elate
d
q
u
esti
o
n
.
2
.
2
.
Student
m
o
delli
ng
f
o
r
p
er
s
o
na
liza
t
io
n
A
teac
h
i
n
g
-
lear
n
i
n
g
p
r
o
ce
s
s
h
elp
s
to
id
en
ti
f
y
t
h
e
g
ap
i
n
s
tu
d
en
t
’
s
k
n
o
w
led
g
e
[
1
2
]
.
An
I
T
S
is
an
ef
f
ec
tiv
e
s
y
s
te
m
th
at
f
ill
s
th
e
g
ap
b
y
p
r
o
v
id
in
g
p
er
s
o
n
al
ized
in
s
tr
u
c
tio
n
to
th
e
s
tu
d
e
n
ts
b
ased
on
th
e
ir
k
n
o
w
led
g
e
an
d
lear
n
in
g
ca
p
ac
it
y
.
T
h
e
co
n
f
id
en
ce
lev
e
l
o
f
th
e
s
t
u
d
en
t
in
ap
p
l
y
i
n
g
th
ese
g
r
a
m
m
ar
r
u
les
ar
e
m
ea
s
u
r
ed
o
n
th
e
s
ca
le
v
er
y
g
o
o
d
-
g
o
o
d
-
av
er
a
g
e
-
w
ea
k
-
p
o
o
r
.
T
h
e
s
tu
d
en
t
’
s
m
o
d
el
ca
p
tu
r
es
t
h
e
s
t
u
d
en
t
s
’
k
n
o
w
led
g
e
lev
el
a
f
ter
ev
er
y
e
x
er
cise a
n
d
g
en
e
r
ate
s
n
e
w
e
x
e
r
cise if
a
n
y
w
ea
k
ar
ea
s
ar
e
id
en
ti
f
ied
.
Dee
p
tu
to
r
,
a
d
ialo
g
u
e
b
a
s
ed
I
T
S
is
d
ev
elo
p
ed
to
h
e
lp
th
e
s
t
u
d
en
t
s
w
it
h
th
e
s
cie
n
ce
t
o
p
ics
[
1
3
]
.
Stu
d
e
n
ts
i
n
ter
ac
t
w
it
h
t
h
e
s
y
s
te
m
to
s
o
l
v
e
p
h
y
s
ic
s
p
r
o
b
lem
s
.
Stu
d
e
n
ts
ar
e
g
iv
e
n
h
in
ts
to
h
elp
th
e
m
f
i
n
d
th
e
s
o
lu
tio
n
s
th
e
m
s
elv
e
s
a
n
d
u
s
i
n
g
n
a
tu
r
al
lan
g
u
ag
e
as
s
es
s
m
en
t
m
et
h
o
d
s
,
t
h
e
s
o
lu
t
io
n
s
a
r
e
ev
al
u
ated
.
T
h
e
T
u
to
r
in
g
s
y
s
te
m
g
iv
e
s
p
o
s
itiv
e
o
r
n
eg
ativ
e
f
ee
d
b
ac
k
.
T
h
u
s
,
th
er
e
is
a
s
i
g
n
i
f
ica
n
t
lear
n
in
g
g
ain
i
n
th
e
s
y
s
te
m
w
h
e
n
co
m
p
ar
ed
to
r
ea
d
in
g
w
o
r
k
ed
o
u
t so
lu
t
io
n
s
.
A
co
n
v
er
s
at
io
n
al
i
n
tell
ig
e
n
t
tu
to
r
in
g
s
y
s
te
m
(
C
I
T
S)
is
u
s
ed
to
en
h
an
ce
th
e
lear
n
i
n
g
i
n
a
u
t
is
ti
c
ch
ild
r
en
b
y
ad
o
p
tin
g
a
v
is
u
al
au
d
io
k
i
n
ae
s
t
h
etic
lear
n
in
g
s
t
y
l
e
[
5
]
.
T
h
e
co
n
v
er
s
atio
n
al
i
n
telli
g
e
n
t
s
y
s
te
m
i
s
ad
o
p
ted
to
th
e
lear
n
i
n
g
s
t
y
le
o
f
th
e
s
e
c
h
il
d
r
en
.
Sh
o
r
t
te
x
t
s
i
m
ilar
it
y
(
ST
S
)
alg
o
r
it
h
m
a
n
d
tex
t
b
a
s
ed
p
atter
n
m
atc
h
in
g
ar
e
u
s
ed
to
g
et
t
h
e
r
esp
o
n
s
e
f
r
o
m
a
d
o
m
ai
n
f
o
r
a
u
s
er
u
tter
an
ce
.
T
h
e
C
I
T
S
w
a
s
b
u
ilt
o
n
t
h
r
ee
m
ain
co
m
p
o
n
e
n
t
s
:
C
o
m
p
o
n
e
n
t
1
c
o
n
s
is
ts
o
f
k
n
o
w
led
g
e
b
ase
a
n
d
th
e
lo
g
f
ile
s
,
co
m
p
o
n
e
n
t
2
co
n
s
is
ts
o
f
t
h
e
co
n
v
er
s
atio
n
al
ag
e
n
t a
n
d
co
m
p
o
n
en
t 3
is
th
e
I
T
S.
2
.
3
.
M
ultim
o
da
l
i
nte
ra
ct
io
n
o
n
e
du
ca
t
io
na
l
s
y
s
t
e
m
s
T
h
e
f
r
am
e
w
o
r
k
o
f
m
u
ltip
le
m
o
d
al
i
n
ter
ac
tio
n
s
y
s
te
m
f
o
r
ed
u
ca
tio
n
(
MM
I
SE)
i
m
p
le
m
e
n
ts
a
clien
t
s
er
v
er
ar
ch
itect
u
r
e
[
1
4
]
.
T
h
e
clien
t
d
ea
ls
w
ith
v
ar
io
u
s
i
n
p
u
t
s
ig
n
al
s
f
r
o
m
th
e
s
t
u
d
en
t
li
k
e
k
e
y
b
o
ar
d
t
y
p
in
g
,
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
11
,
No
.
5
,
Octo
b
e
r
2
0
2
1
:
4
5
2
2
-
4530
4524
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e
r
ec
o
g
n
itio
n
.
T
h
ese
s
i
g
n
a
ls
ar
e
s
to
r
ed
in
t
h
e
d
atab
ase
f
o
r
an
al
y
s
is
d
ep
en
d
in
g
o
n
th
e
p
e
d
ag
o
g
ical
r
eq
u
ir
e
m
e
n
t.
T
h
e
o
u
tp
u
t
g
e
n
er
ated
f
r
o
m
th
e
s
y
s
t
e
m
i
s
tex
t,
v
o
ice
o
r
an
y
a
v
atar
a
n
i
m
atio
n
to
e
n
g
a
g
e
t
h
e
s
t
u
d
en
t
s
i
n
th
e
lear
n
i
n
g
p
r
o
ce
s
s
.
T
h
e
s
u
r
v
e
y
co
n
d
u
cted
o
n
teac
h
er
s
’
ex
p
er
ien
ce
s
in
co
n
d
u
ct
in
g
m
u
lti
m
o
d
al
teac
h
in
g
a
n
d
lear
n
i
n
g
s
h
o
w
t
h
e
u
s
e
o
f
tec
h
n
o
lo
g
y
as
a
m
ed
i
u
m
f
o
r
i
m
p
ar
tin
g
i
n
f
o
r
m
atio
n
,
co
llab
o
r
ativ
e
lear
n
i
n
g
a
n
d
also
to
d
esig
n
lear
n
in
g
ac
ti
v
itie
s
f
o
r
i
m
p
r
o
v
in
g
t
h
e
lear
n
in
g
ex
p
er
ien
ce
[
1
5
]
.
T
h
e
co
m
m
u
n
icatio
n
s
a
n
d
th
e
r
elatio
n
s
h
ip
b
et
w
ee
n
t
h
e
teac
h
er
s
an
d
s
tu
d
en
ts
h
av
e
c
h
a
n
g
ed
an
d
lear
n
er
s
co
p
e
m
o
r
e
ef
f
icie
n
tl
y
w
it
h
co
m
p
u
ter
a
n
d
o
th
er
n
e
w
m
o
d
e
s
o
f
in
f
o
r
m
atio
n
p
r
esen
tat
io
n
[
1
6
]
.
2
.
4
.
Appl
ica
t
io
n
o
f
NL
P
in
p
eda
g
o
g
y
I
m
p
le
m
e
n
ti
n
g
n
at
u
r
al
lan
g
u
ag
e
in
th
e
lear
n
in
g
p
r
o
ce
s
s
n
o
t
o
n
l
y
b
r
in
g
s
a
n
ef
f
ec
ti
v
e
i
m
p
r
o
v
e
m
e
n
t
i
n
th
e
lear
n
in
g
p
r
o
ce
s
s
b
u
t
also
h
elp
s
i
n
d
ev
e
lo
p
in
g
th
e
lan
g
u
ag
e
p
r
o
ce
s
s
[
1
7
]
.
NL
P
is
a
n
e
f
f
ec
t
iv
e
to
o
l
f
o
r
b
r
in
g
i
n
g
an
i
m
p
r
o
v
e
m
e
n
t
i
n
t
h
e
ed
u
ca
t
io
n
s
ec
to
r
.
Ma
n
y
ed
u
ca
tio
n
al
co
n
te
x
ts
s
u
ch
as
e
-
le
ar
n
in
g
,
r
esear
c
h
a
n
d
ev
alu
a
tio
n
i
n
te
g
r
ate
N
L
P
tech
n
iq
u
es
to
b
r
in
g
a
p
o
s
iti
v
e
o
u
tco
m
e
in
t
h
e
ed
u
ca
tio
n
s
y
s
t
e
m
.
W
h
e
n
N
L
P
is
i
m
p
le
m
en
ted
i
n
ed
u
ca
tio
n
,
th
er
e
is
an
in
cr
ea
s
e
in
t
h
e
s
tu
d
e
n
t
’
s
lear
n
i
n
g
o
u
tp
u
t.
So
m
e
ti
m
es,
s
tu
d
en
t
f
ail
s
to
u
n
d
er
s
ta
n
d
t
h
e
co
n
tex
t
d
u
e
to
th
e
o
b
s
tacle
o
f
la
n
g
u
a
g
e.
N
L
P
ca
n
b
e
a
d
esire
d
ap
p
r
o
ac
h
f
o
r
i
m
p
r
o
v
in
g
t
h
e
lear
n
in
g
ab
ili
t
y
o
f
s
tu
d
e
n
ts
.
NL
P
an
d
M
u
lt
i
m
ed
ia
tech
n
o
l
o
g
y
i
s
co
m
b
i
n
ed
to
d
ev
e
lo
p
a
co
m
p
u
ter
a
s
s
i
s
ted
teac
h
i
n
g
s
y
s
te
m
[
1
8
]
.
A
n
ed
u
ca
tio
n
al
ap
p
licatio
n
ar
ea
o
f
lan
g
u
a
g
e
ass
e
s
s
m
e
n
t
u
s
es
NL
P
to
ac
c
ess
t
h
e
s
tu
d
e
n
ts
t
y
p
ed
an
s
w
er
s
[
1
9
]
.
S
y
n
tactic
a
n
al
y
s
i
s
d
etec
ts
a
n
y
w
r
iti
n
g
er
r
o
r
s
w
h
ile
s
e
m
an
ti
c
an
al
y
s
i
s
ac
ce
s
s
e
s
th
e
m
ea
n
in
g
o
f
s
t
u
d
en
t’
s
r
e
s
p
o
n
s
es.
T
h
e
d
is
co
u
r
s
e
p
r
o
ce
s
s
i
n
g
is
u
s
ed
to
f
i
n
d
t
h
e
c
o
n
n
ec
tio
n
b
et
w
ee
n
s
en
te
n
ce
s
NL
P
to
o
ls
ar
e
lev
er
ag
ed
f
o
r
m
e
as
u
r
in
g
o
r
ac
ce
s
s
in
g
s
t
u
d
en
ts
’
co
n
te
n
t
in
a
p
r
o
j
e
ct
b
ase
d
lear
n
in
g
ac
tiv
itie
s
[
20
]
.
A
li
n
g
u
is
tic
in
q
u
ir
y
a
n
d
w
o
r
d
co
u
n
t
2015
(
L
I
W
C
2
0
1
5
)
is
u
s
ed
to
an
al
y
s
e
th
e
co
n
te
n
t
i
n
th
e
s
tu
d
e
n
t’
s
b
lo
g
f
o
r
th
e
a
s
s
e
s
s
m
en
t
w
o
r
k
g
i
v
en
b
y
t
h
e
teac
h
er
.
T
h
e
L
I
W
C
ca
p
tu
r
es
th
e
an
al
y
tical
t
h
i
n
k
i
n
g
,
e
m
o
tio
n
al
to
n
e,
c
lo
u
t
a
n
d
a
u
t
h
en
t
icit
y
.
T
h
ese
ca
te
g
o
r
ies
p
r
o
v
id
e
d
etails
ab
o
u
t
a
s
t
u
d
en
t
’
s
e
n
g
a
g
e
m
en
t
w
h
ile
lear
n
in
g
i
n
a
n
I
T
S.
T
h
e
k
n
o
w
led
g
e
ev
al
u
atio
n
o
f
t
h
e
s
tu
d
e
n
t
’
s
as
s
es
s
m
en
t
is
d
o
n
e
t
h
r
o
u
g
h
n
at
u
r
al
la
n
g
u
a
g
e
p
r
o
ce
s
s
in
g
.
N
L
P
is
u
s
ed
f
o
r
f
r
a
m
i
n
g
th
e
q
u
e
s
tio
n
s
,
ch
ec
k
i
n
g
t
h
e
an
s
w
er
s
g
iv
e
n
b
y
s
t
u
d
en
ts
an
d
also
f
o
r
g
iv
in
g
m
o
t
iv
at
io
n
al
f
ee
d
b
ac
k
[
21
].
2
.
5
.
I
nfo
rm
a
t
io
n
r
et
riev
a
l v
ia
a
c
o
nv
er
s
a
t
i
o
n
i
nte
rf
a
ce
Qu
est
io
n
a
n
s
w
er
i
n
g
(
Q
A
)
m
o
d
el
ex
tr
ac
ts
t
h
e
e
x
ac
t
an
d
p
r
e
cise
an
s
w
er
f
r
o
m
t
h
e
d
ataset
[
2
2
]
.
T
h
e
QA
m
o
d
el
h
as
f
o
u
r
d
if
f
er
e
n
t
m
o
d
u
les
n
a
m
el
y
q
u
est
io
n
p
r
o
ce
s
s
in
g
m
o
d
u
le,
d
o
cu
m
e
n
t
p
r
o
ce
s
s
in
g
m
o
d
u
le,
d
o
cu
m
en
t
ex
tr
ac
tio
n
m
o
d
u
le
a
n
d
d
o
cu
m
e
n
t
p
r
o
ce
s
s
i
n
g
m
o
d
u
le.
T
h
e
a
n
s
w
er
ex
tr
ac
tio
n
al
g
o
r
ith
m
e
x
tr
ac
t
s
t
h
e
k
e
y
w
o
r
d
f
r
o
m
th
e
q
u
e
s
tio
n
a
n
d
m
atc
h
th
e
r
elev
a
n
t
p
ar
ag
r
ap
h
h
a
v
in
g
t
h
e
k
e
y
w
o
r
d
in
th
e
d
ataset.
T
h
e
an
s
w
er
e
x
tr
ac
tio
n
al
g
o
r
it
h
m
ex
tr
ac
t
s
th
e
k
e
y
w
o
r
d
f
r
o
m
t
h
e
q
u
e
s
tio
n
an
d
g
o
es
t
h
r
o
u
g
h
th
e
p
ar
ag
r
ap
h
ex
tr
ac
to
r
an
d
s
en
te
n
ce
ex
tr
ac
to
r
ac
co
r
d
in
g
to
th
e
t
y
p
e
o
f
q
u
es
tio
n
s
.
Fo
r
i
m
p
le
m
en
t
in
g
a
q
u
esti
o
n
an
s
w
er
i
n
g
s
y
s
te
m
p
r
e
-
p
r
o
ce
s
s
in
g
o
p
er
atio
n
li
k
e
s
te
m
m
i
n
g
,
s
to
p
-
w
o
r
d
r
e
m
o
v
al,
ar
e
p
er
f
o
r
m
ed
o
n
t
h
e
tex
t
f
ile
o
f
co
r
p
u
s
[
2
3
]
.
T
h
e
ex
tr
ac
ted
k
e
y
w
o
r
d
s
ar
e
s
t
o
r
ed
in
I
n
d
ex
ter
m
d
ictio
n
ar
y
.
P
OS
ta
g
g
in
g
,
s
te
m
m
i
n
g
is
d
o
n
e
o
n
u
s
er
q
u
er
y
a
n
d
th
e
ex
tr
ac
ted
k
e
y
w
o
r
d
s
ar
e
m
atc
h
ed
w
it
h
t
h
e
ter
m
in
t
h
e
I
n
d
e
x
d
ictio
n
ar
y
.
P
OS
tag
g
i
n
g
is
ap
p
lied
o
n
th
e
ex
tr
ac
ted
d
o
cu
m
e
n
ts
to
m
a
tc
h
th
e
s
a
m
e
s
en
s
e
as
th
e
q
u
er
y
s
e
n
s
e.
A
s
i
m
p
le
q
u
esti
o
n
p
ar
s
i
n
g
al
g
o
r
it
h
m
a
n
d
q
u
esti
o
n
s
e
m
an
t
ic
s
i
m
ilar
it
y
a
lg
o
r
ith
m
i
s
u
s
ed
to
p
ar
s
e
a
s
i
m
p
le
q
u
es
t
io
n
[
2
4
]
.
T
h
e
ex
p
er
im
e
n
t
s
r
esu
l
ts
s
h
o
w
t
h
e
p
r
ec
is
io
n
a
n
d
r
ec
all
as
h
ig
h
i
n
d
icate
d
th
at
q
u
esti
o
n
a
n
s
w
er
in
g
s
y
s
te
m
u
s
i
n
g
n
at
u
r
al
la
n
g
u
a
g
e
is
an
ef
f
ec
tiv
e
m
et
h
o
d
f
o
r
s
t
u
d
e
n
ts
a
n
d
teac
h
er
s
to
ex
ch
a
n
g
e
q
u
esti
o
n
an
d
an
s
w
e
r
s
o
n
n
et
w
o
r
k
teac
h
i
n
g
.
T
h
e
n
e
w
g
e
n
er
atio
n
b
o
ts
u
s
e
N
L
P
to
p
r
o
v
id
e
h
u
m
a
n
lik
e
i
n
ter
ac
tio
n
[
2
5
]
.
T
h
e
b
o
t
s
ar
e
class
i
f
ied
as
co
n
v
er
s
ati
o
n
al
ch
atb
o
ts
a
n
d
s
er
v
ice
o
r
ien
ted
ch
atb
o
ts
.
T
h
e
p
ap
er
p
r
o
p
o
s
es
a
co
n
ce
p
t
o
f
‘
b
o
tp
licatio
n
s
’
f
o
r
p
r
o
v
id
in
g
s
er
v
ices
a
n
d
d
ata
th
r
o
u
g
h
c
h
at
b
o
ts
f
o
r
an
ef
f
ic
ien
t
ex
p
er
ien
ce
.
2
.
6
.
K
no
w
ledg
e
e
v
a
lua
t
io
n t
hro
ug
h c
o
nv
er
s
a
t
io
n
C
h
atb
o
t
d
ev
elo
p
ed
is
u
s
ed
to
in
tr
o
d
u
ce
th
e
co
n
ce
p
ts
o
f
v
ar
i
ab
les
an
d
co
n
d
itio
n
an
d
also
ad
v
an
ce
d
co
n
ce
p
ts
o
f
f
i
n
ite
s
tate
au
to
m
ata
[
2
6
]
.
T
h
e
ch
atb
o
t
u
s
e
s
p
atter
n
m
atc
h
in
g
,
le
m
m
at
izatio
n
t
ec
h
n
iq
u
e
an
d
f
i
n
ite
s
tate
a
u
to
m
ata
to
p
r
o
v
id
e
th
e
s
e
ass
e
s
s
m
e
n
ts
to
th
e
s
t
u
d
en
t
s
.
T
h
e
au
t
h
o
r
s
d
id
t
w
o
o
b
s
er
v
atio
n
al
s
t
u
d
ies
to
an
al
y
s
e
t
h
e
e
f
f
ec
t
o
f
c
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at
b
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d
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D
if
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in
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icato
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ar
ticip
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,
s
elf
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ep
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ted
in
ter
est
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d
w
ill
in
g
n
e
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s
t
o
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m
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ed
.
I
t
is
f
o
u
n
d
th
at
t
h
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tas
k
co
m
p
letio
n
r
ate
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m
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f
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r
s
tu
d
e
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ts
w
h
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t
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ch
at
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A
n
d
d
escr
ib
e
th
at
t
h
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ch
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t c
an
b
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u
s
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in
ed
u
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tio
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ac
k
g
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d
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Qu
iz
ch
atb
o
t
r
esp
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d
s
to
s
tu
d
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t
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s
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eq
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s
to
r
ed
u
ce
ed
u
ca
to
r
’
s
w
o
r
k
lo
ad
[
9
]
.
T
h
e
Qu
iz
c
h
atb
o
t
as
k
s
th
e
s
t
u
d
en
ts
to
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m
u
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q
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d
a
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k
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ti
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f
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th
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a
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s
w
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h
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y
h
ad
s
elec
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T
h
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ch
atb
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also
p
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id
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p
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n
alize
d
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w
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p
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T
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tify
t
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co
m
m
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ar
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w
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t
u
d
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ts
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lear
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[
2
7
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T
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W
it.a
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ai,
a
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d
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a
b
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ts
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co
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T
h
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s
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s
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co
m
m
u
n
ica
tio
n
[
2
8
]
.
A
ch
atb
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t
is
d
ev
elo
p
ed
to
m
e
asu
r
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t
h
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m
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m
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y
r
eten
tio
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a
n
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lear
n
in
g
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u
tco
m
e
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f
s
t
u
d
e
n
ts
[
2
9
]
.
A
ch
atb
o
t
o
f
an
o
b
j
ec
t
-
o
r
ien
ted
p
r
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g
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am
m
i
n
g
lan
g
u
a
g
e
is
d
ev
elo
p
ed
an
d
is
d
e
p
lo
y
ed
.
It
ev
alu
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s
t
h
e
s
t
u
d
en
t
s
lear
n
in
g
m
et
h
o
d
o
lo
g
y
.
T
h
e
r
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s
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g
a
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s
w
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m
d
ev
elo
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co
m
p
ar
ed
.
T
h
e
r
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lts
s
h
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t
h
at
t
h
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t
u
d
en
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s
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th
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v
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tio
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a
l se
ar
ch
en
g
in
e.
3.
MET
H
O
D
T
h
e
ap
p
r
o
ac
h
d
ec
i
d
ed
f
o
r
th
e
r
esear
ch
w
a
s
to
p
ick
a
s
u
itab
le
s
u
b
j
ec
t
u
s
in
g
w
h
ic
h
a
lear
n
in
g
ass
i
s
tan
t
p
r
o
to
ty
p
e
co
u
ld
b
e
b
u
ilt
an
d
an
al
y
s
ed
.
T
h
e
s
u
b
j
ec
t
m
u
s
t
also
b
e
ef
f
icien
tl
y
ca
p
tu
r
ed
w
it
h
i
n
an
elec
tr
o
n
ic
k
n
o
w
led
g
e
b
ase
w
h
ic
h
ca
n
b
e
u
s
ed
i
n
an
N
L
P
co
n
tex
t
f
o
r
in
f
o
r
m
atio
n
ex
tr
ac
tio
n
.
Fo
r
ev
al
u
ati
n
g
th
e
lear
n
i
n
g
ass
is
tan
t,
s
u
f
f
icie
n
t
q
u
an
tit
y
o
f
r
ea
l
u
s
er
q
u
er
ie
s
ac
r
o
s
s
v
ar
io
u
s
s
u
b
j
ec
t to
p
ics r
eg
ar
d
in
g
t
h
e
k
e
y
co
n
ce
p
ts
n
ee
d
to
b
e
co
llected
f
r
o
m
s
tu
d
e
n
ts
.
T
h
e
u
s
er
q
u
er
ies
w
il
l
m
i
m
i
c
o
r
s
i
m
u
late
t
h
e
in
ter
ac
tio
n
o
f
t
h
e
c
h
atb
o
t
w
i
t
h
in
d
iv
id
u
al
s
t
u
d
en
ts
.
3
.
1
.
Cho
o
s
ing
t
he
s
ub
j
ec
t
f
o
r
t
he
k
no
w
ledg
e
b
a
s
e
On
e
o
f
t
h
e
cr
itica
l
u
n
d
er
l
y
i
n
g
i
m
p
er
ativ
e
s
f
o
r
s
ch
o
o
l
ed
u
ca
tio
n
is
to
s
h
ap
e
t
h
e
w
a
y
s
t
u
d
en
ts
t
h
i
n
k
.
Ov
er
t
h
e
p
as
t
d
ec
ad
e,
s
c
h
o
o
ls
ac
r
o
s
s
t
h
e
w
o
r
ld
h
a
v
e
b
ee
n
t
u
r
n
i
n
g
to
Scr
atch
.
I
t
is
b
y
f
ar
,
th
e
m
o
s
t
p
o
p
u
lar
to
o
l
f
o
r
co
m
p
u
ter
p
r
o
g
r
a
m
m
i
n
g
ed
u
ca
tio
n
i
n
p
r
i
m
ar
y
s
c
h
o
o
ls
b
y
m
i
llio
n
s
o
f
s
c
h
o
o
l
c
h
i
ld
r
en
.
I
t
is
a
v
er
y
v
is
u
al
a
n
d
b
lo
ck
-
b
a
s
ed
,
d
r
ag
-
an
d
-
d
r
o
p
s
y
s
te
m
t
h
at
e
n
ab
le
s
a
h
i
g
h
l
y
cr
ea
tiv
e
lear
n
i
n
g
ex
p
er
ien
ce
f
o
r
all
ch
ild
r
en
,
ir
r
esp
ec
tiv
e
o
f
th
ei
r
ab
ilit
ies
an
d
lev
el
s
o
f
p
r
o
f
icien
c
y
.
U
s
i
n
g
Scr
atc
h
,
ch
ild
r
en
en
j
o
y
m
a
k
i
n
g
p
r
esen
tatio
n
s
,
s
i
m
p
le
g
a
m
es,
ca
r
to
o
n
an
i
m
at
io
n
s
,
co
n
v
er
s
at
io
n
s
i
m
u
latio
n
s
,
an
d
p
u
zz
les
.
T
h
is
p
r
o
v
id
es
th
e
f
r
ee
d
o
m
f
o
r
th
e
m
to
e
x
p
lo
r
e
th
eir
b
o
u
n
d
le
s
s
cr
ea
ti
v
it
y
.
Ho
w
e
v
er
,
s
i
n
ce
t
h
e
lear
n
in
g
i
s
v
er
y
ex
p
er
ien
tial,
t
h
e
m
ax
i
m
u
m
lear
n
in
g
h
ap
p
en
s
wh
ile
t
h
e
s
t
u
d
en
t
s
tr
y
o
u
t
v
ar
io
u
s
p
r
o
j
ec
ts
,
lear
n
in
g
h
o
w
to
e
x
p
lo
r
e
an
d
ap
p
ly
th
e
v
ar
io
u
s
co
m
p
u
tatio
n
al
co
n
ce
p
ts
,
s
u
ch
as
s
eq
u
e
n
ci
n
g
,
iter
ati
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,
an
d
v
ar
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a
n
d
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u
tatio
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ac
tices,
s
u
c
h
as
d
eb
u
g
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g
an
d
ab
s
tr
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tio
n
.
Ho
w
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er
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t
h
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t
r
ad
itio
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p
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ag
o
g
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m
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t
s
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d
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ar
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v
er
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s
u
ited
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s
u
b
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ts
lik
e
Scr
atch
w
h
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ch
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er
y
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ased
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2
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t
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h
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o
t,
w
h
ich
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n
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e
o
f
aid
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en
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g
s
tu
d
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ts
’
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d
f
aster
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n
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g
o
f
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atch
b
asics
.
3
.
2
.
Cha
t
bo
t
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ro
t
o
t
y
pe
i
m
pl
e
m
e
nta
t
io
n
-
r
a
s
a
n
a
t
ura
l
l
a
n
g
ua
g
e
p
ro
ce
s
s
ing
(
NL
U)
inte
g
ra
t
io
n
T
h
e
R
asa
s
tack
w
as
u
s
ed
f
o
r
th
e
d
ev
elo
p
m
e
n
t
o
f
th
is
co
n
v
er
s
atio
n
al
ch
atb
o
t.
R
asa
N
L
U
an
d
R
asa
C
o
r
e
ar
e
t
w
o
p
o
p
u
lar
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p
en
-
s
o
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r
ce
P
y
t
h
o
n
l
ib
r
ar
ies
f
o
r
d
ev
e
lo
p
in
g
a
ch
a
tb
o
t.
T
h
ey
ca
n
p
r
o
v
id
e
th
e
r
eq
u
ir
ed
n
atu
r
al
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g
u
ag
e
u
n
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er
s
tan
d
i
n
g
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m
ac
h
i
n
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n
in
g
a
n
d
d
ialo
g
u
e
m
a
n
a
g
e
m
e
n
t
ca
p
ab
ilit
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.
T
h
e
d
ev
elo
p
ed
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o
t
ca
lled
“
S
C
R
A
T
C
H
A
I
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is
i
n
te
g
r
ated
w
it
h
Slac
k
f
o
r
a
User
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n
ter
f
ac
e,
s
e
lecte
d
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ased
o
n
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o
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u
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h
e
p
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r
e
s
h
o
w
n
i
n
th
e
F
ig
u
r
e
1
p
r
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u
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i
ll
u
s
tr
ates
h
o
w
a
c
h
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b
o
t
b
u
ilt
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g
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a
s
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r
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o
n
d
s
to
a
m
e
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g
e
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th
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s
er
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q
u
e
s
tio
n
i
s
r
ec
eiv
ed
f
r
o
m
th
e
s
tu
d
en
t
an
d
is
p
ass
ed
o
n
to
a
n
in
ter
p
r
eter
(
R
asa
N
L
U)
to
ex
tr
ac
t
th
e
i
n
te
n
t
an
d
en
titi
e
s
.
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h
e
T
r
ac
k
er
is
u
s
ed
to
m
ai
n
t
ain
t
h
e
co
n
v
er
s
atio
n
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tat
u
s
.
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t
g
et
s
a
n
o
ti
f
icatio
n
t
h
at
a
n
e
w
m
e
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s
a
g
e
h
as
co
m
e
i
n
T
h
e
p
o
licy
g
et
s
th
e
c
u
r
r
en
t
s
ta
te
o
f
th
e
tr
ac
k
er
.
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h
e
p
o
licy
d
ec
id
es
w
h
at
ac
tio
n
to
b
e
tak
en
n
ex
t
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h
e
ac
tio
n
th
at
is
c
h
o
s
e
n
is
lo
g
g
ed
o
n
to
T
r
ac
k
er
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h
e
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tio
n
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ex
ec
u
ted
an
d
an
s
w
er
is
s
en
t to
t
h
e
s
t
u
d
en
t.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
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p
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n
g
,
Vo
l.
11
,
No
.
5
,
Octo
b
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r
2
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1
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5
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4530
4526
Fig
u
r
e
1
.
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asa
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i
g
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lev
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l a
r
ch
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tectu
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m
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t
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p
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g
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er
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m
es
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ee
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P
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ase
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r
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er
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h
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er
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is
.
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h
e
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U
a
n
d
th
e
co
r
e
co
m
p
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n
e
n
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ile
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d
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ip
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e
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p
r
etr
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ed
e
m
b
ed
d
i
n
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s
s
p
ac
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”
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also
ad
d
ed
.
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h
e
NL
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m
o
d
el
is
tr
ai
n
ed
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d
is
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ass
ed
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e
NL
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n
ter
p
r
eter
to
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ar
s
e
th
e
s
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m
p
le
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te
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ts
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i
n
d
if
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L
U
i
s
ab
le
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if
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t
h
e
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te
n
t a
n
d
ex
tr
ac
t th
e
e
n
titi
e
s
co
r
r
ec
tl
y
.
3
.
4
.
Deplo
y
ing
t
he
bo
t
o
n s
la
ck
T
h
e
m
e
s
s
a
g
i
n
g
in
ter
f
ac
e
c
h
o
s
en
is
S
lac
k
3
.
9
.
Slack
i
s
a
w
i
d
ely
u
s
ed
m
e
s
s
a
g
i
n
g
p
lat
f
o
r
m
w
h
ic
h
i
s
av
ailab
le
o
n
t
h
e
m
o
b
ile
an
d
d
esk
to
p
.
T
h
e
s
lack
A
P
I
p
r
o
v
id
es
a
v
ar
ie
t
y
o
f
ac
t
io
n
s
th
a
t
b
o
t
ca
n
d
o
o
n
t
h
e
p
latf
o
r
m
.
T
h
e
b
o
t
ca
n
s
e
n
d
m
ess
a
g
es
i
n
to
S
lac
k
an
d
it
ca
n
r
ec
eiv
e
m
e
s
s
a
g
es
f
r
o
m
th
e
u
s
er
.
T
h
e
co
n
ten
t
ca
n
in
cl
u
d
e
r
ich
tex
t a
n
d
i
m
ag
e
s
a
n
d
m
o
r
e.
T
h
e
u
s
er
ca
n
al
s
o
u
s
e
S
lack
as
an
id
en
ti
t
y
p
r
o
v
id
er
b
y
s
ig
n
i
n
g
-
up
w
it
h
a
S
lack
ac
co
u
n
t
.
T
h
e
Scr
atch
A
I
b
o
t
is
in
teg
r
ated
o
n
to
Slac
k
u
s
i
n
g
n
g
r
o
k
,
a
lig
h
t
w
eig
h
t
u
tili
t
y
t
h
at
estab
lis
h
e
s
a
s
ec
u
r
e
tu
n
n
el
b
et
w
ee
n
s
lack
an
d
t
h
e
S
C
R
A
T
C
H
A
I
p
r
o
g
r
a
m
.
A
b
o
t
u
s
er
O
A
u
th
ac
ce
s
s
to
k
en
is
g
e
n
er
ated
f
r
o
m
Slac
k
an
d
t
h
e
d
etails
o
f
th
is
to
k
e
n
ar
e
u
s
ed
in
t
h
e
’
c
r
ed
en
tials
.
y
m
l
’
f
i
le
o
f
SC
R
AT
C
H
A
I
p
r
o
j
ec
t
to
au
th
o
r
ize
th
e
co
n
n
ec
tio
n
f
r
o
m
SC
R
A
CH
A
I
b
o
t
to
S
lack
,
th
r
o
u
g
h
t
h
e
t
u
n
n
el
cr
ea
ted
u
s
in
g
n
g
r
o
k
,
o
n
p
o
r
t
n
u
m
b
er
5004
.
T
h
e
n
g
r
o
k
t
u
n
n
el
U
R
L
g
en
er
ated
i
s
al
s
o
m
ap
p
ed
as
an
E
v
e
n
t
Su
b
s
cr
ip
tio
n
R
eq
u
est
UR
L
w
it
h
i
n
Slac
k
.
Fi
g
u
r
e
2
s
h
o
w
s
t
h
e
cr
ea
tio
n
o
f
t
h
e
tu
n
n
el
U
R
L
u
s
i
n
g
n
g
r
o
k
Fig
u
r
e
2
.
Ng
r
o
k
4.
R
E
SU
L
T
S
A
ND
D
ISC
U
S
SIO
N
4
.
1
.
Cha
t
bo
t
ev
a
lua
t
i
o
n a
nd
a
na
ly
s
is
T
o
ev
alu
ate
th
e
p
er
f
o
r
m
a
n
ce
o
f
th
e
c
h
atb
o
t
an
d
to
i
m
p
r
o
v
e
it,
w
e
h
av
e
u
s
ed
a
2
-
p
ass
b
asic
test
s
a
m
p
le
ap
p
r
o
ac
h
,
as
r
ec
o
m
m
en
d
ed
f
o
r
an
y
A
I
/M
L
m
o
d
el.
A
s
p
ar
t
o
f
th
i
s
,
th
e
test
s
ti
m
u
li
w
o
u
ld
b
e
f
ir
s
t
d
iv
id
ed
r
an
d
o
m
l
y
i
n
to
2
s
ep
ar
ate
h
al
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es,
to
en
s
u
r
e
t
h
er
e
is
n
o
s
a
m
p
lin
g
b
ias
i
n
tr
o
d
u
ce
d
at
th
is
s
ta
g
e.
T
h
e
f
ir
s
t
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
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lec
&
C
o
m
p
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I
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N:
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8708
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4527
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e
f
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2
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8
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9
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A
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