Introduction To Production Scheduling Page 26
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28Scheduling objectives (IV)
Due date related objectives (II)
L
C
d
Lateness of a job:
=
–
j
j
j
L
max
L
Maximum lateness:
=
(
)
max
j
L
L
n
Average (total) lateness:
= Σ
/
ij
wL
w
L
Weighted lateness:
= Σ
j
j
T
max
L
Tardiness of a job:
=
(0,
)
j
j
T
max
T
Maximum tardiness
=
(
)
max
j
T
T
n
Average (total) tardiness:
= Σ
/
j
wT
w
T
Weighted tardiness:
= Σ
j
j
U
U
; U
T
, U
T
Number of tardy jobs:
= Σ
=0 if
=0
=1 if
≠0
j
j
j
j
j
E
max
L
Earliness of a job:
=
(0, –
)
j
j
E
max
E
Maximum earliness
=
(
)
max
j
E
E
n
= Σ
Average (total) earliness:
/
j
wE
w
E
= Σ
Weighted earliness:
26
j
j
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