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(1/4)
Data Abstraction Method
data object: procedures: assertions:
7-6
(2/4)
Liang
(3/4)
(4/4)
DSS(2/5)
, ...
X1X4X5a2 a3X2X3 N(u2, S2)N(u3, S3)
X1a2X2a3X3
DSS(3/5)
ExcelGPSSSAS GAMS
(verification)
(validation)
7-3
DSS(4/5)
: ,
Ciji j Xij
j gjj
i ri
DSS(5/5)
, ...
Minimize Cij Xij ij
Xij g j
i
Xij ri j
DSS(5/5)
LINDO
(1/2)
DSS
(1/2)
(2/2)
7-4
(1/2)
(1/3)
Geoffrion(1989)
EOQ
D/a/: Real+ Demand(/a/) H/a/: Real+ holding cost F/a/: Real+ ordering cost
(2/3)
Q/a/: Real+ order quantity (/va/)
Hale Waihona Puke Baidu
7-7 EOQ
(1/2)
7-8
(2/2)
7
DSS DSS
DSS
, , , , ,
DSS
DSS
: WW2 :,
,
7-1
DSS Simon
(1/3)
EOQ
(2/3)
(3/3)
FREQ(D,Q) /f/: D/Q FREQDQ(/f/) SETUP$(FREQ,F)/f/: FREQ*F Setup
costfreq*F CARRY$(H,Q)/f/: H*Q ordering cost
H*Q TOT$(SETUP$,CARRY$)/f/:
SETUP$+CARRY$
(3/3)
7-2
7-1
(40%)(23%) (16%)(13%)
(9%)(8%)
(63%) (58%) (42%) (42%)
7-2
7-3
DSS(1/5)
; DSS
: :
DSS(1/5)
X1 X2 X3 X4 X5