Civil Engineering Reference
In-Depth Information
Table 4.1
(continued)
Parameter
Description
ʸ
ˈ
Threshold value (proportion, 0
≤
ʸ
ˈ
≤
1) for a node of the design tree to be considered converged; i.e., a design tree node is considered
k
ˈ
q
,
k
ʨ
(
i
)
converged if
ʲ
(
i
)
q
,
p
=
q
,
p
≥
ʸ
ˈ
; currently using value of
ʸ
ˈ
∼
0.75-0.9
ˆ
prune
Threshold proportion of convergence of points within design tree node for said node to be removed from further exploration (node is removed
if
ʲ
(
i
)
q
,
p
≤
ˆ
prune
, currently using
ˆ
prune
=
0
.
1)
N
(0)
Number of initial design points over entire domain
A
(0)
N
(
i
)
Number of design points over domain
A
(
i
)
; currently
N
(
i
)
is equal for all
i
=
0
N
reps
Number of replications of each design point
N
iter
Maximum number of s CART modeling iterations (sequential modeling may terminate prematurely if sub-region nodes have been pruned or
have converged)
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