research
r
e
s
e
a
r
c
h
model the domain
m
o
d
e
l
t
h
e
d
o
m
a
i
n
assemble knowledge
a
s
s
e
m
b
l
e
k
n
o
w
l
e
d
g
e
define behavior
d
e
f
i
n
e
b
e
h
a
v
i
o
r
test
t
e
s
t
observe
o
b
s
e
r
v
e
refine
r
e
f
i
n
e
deploy
d
e
p
l
o
y
basehull
b
a
s
e
h
u
l
l