Product Line Flexibility Value Modeling Tool

Preferences

     
Average Productivity (SLOC/PM)  Cost (Burdened $/PM) 
Average Product Size (SLOC)  Interest Rate (Annual %) 

Reuse Category Percentages (Total 100%)
% of Software Unique to each Application     
% of Software Adapted from Product Line     
% of Software Reused From Product Line     

Relative Costs of Reuse (%)
Relative Cost of Reuse for Unique      
Relative Cost of Reuse for Adapted     
Relative Cost of Reuse for Reused     
Relative Cost of Writing for PL Flexibility     
                                                                            Results
              # of Products 1234567
Unique SLOC20000400006000080000100000120000140000
Adapted SLOC150003000045000600007500090000105000
Reused SLOC150003000045000600007500090000105000
Total Non-PL SLOC50000100000150000200000250000300000350000
Non-PL Effort (PM)16733350066783310001167
1-Product Equiv. SLOC71000267502675026750267502675026750
1-Product Equiv. Effort237898989898989
Schedule (Months)22161616161616
Cum. Equiv. PL SLOC7100097750124500151250178000204750231500
Cum. PL Effort (PM)237326415504593682772
Cum. PL Cost $2,366,667 $3,258,333 $4,150,000 $5,041,667 $5,933,333 $6,825,000 $7,716,667
PL Flexibility Investment $700,000$0$0$0$0$0$0
PL Effort Savings($700,000) $75,000 $850,000 $1,625,000 $2,400,000 $3,175,000 $3,950,000
Return on Investment-1.000.111.212.323.434.545.64

                                  Return on Investment
 
 -1.0  0.1  1.2  2.3  3.4  4.5  5.6 
 1  2  3  4  5  6  7 

                                            Product #
Month

Future Cost ($K)

Present Value ($K)
1

106.2

106.2
2

106.2

106.2
3

106.2

106.2
4

106.2

106.2
5

106.2

106.2
6

106.2

99.2
7

106.2

99.2
8

106.2

99.2
9

106.2

99.2
10

106.2

99.2
11

106.2

99.2
12

106.2

99.2
13

106.2

99.2
14

106.2

99.2
15

106.2

99.2
16

106.2

99.2
17

106.2

99.2
18

106.2

92.7
19

106.2

92.7
20

106.2

92.7
21

106.2

92.7
22

106.2

92.7
23

55.2

48.2
24

55.2

48.2
25

55.2

48.2
26

55.2

48.2
27

55.2

48.2
28

55.2

48.2
29

55.2

48.2
30

55.2

45.1
31

55.2

45.1
32

55.2

45.1
33

55.2

45.1
34

55.2

45.1
35

55.2

45.1
36

55.2

45.1
37

55.2

45.1
38

55.2

45.1
39

55.2

45.1
40

55.2

45.1
41

55.2

45.1
42

55.2

42.1
43

55.2

42.1
44

55.2

42.1
45

55.2

42.1
46

55.2

42.1
47

55.2

42.1
48

55.2

42.1
49

55.2

42.1
50

55.2

42.1
51

55.2

42.1
52

55.2

42.1
53

55.2

42.1
54

55.2

39.4
55

55.2

39.4
56

55.2

39.4
57

55.2

39.4
58

55.2

39.4
59

55.2

39.4
60

55.2

39.4
61

55.2

39.4
62

55.2

39.4
63

55.2

39.4
64

55.2

39.4
65

55.2

39.4
66

55.2

36.8
67

55.2

36.8
68

55.2

36.8
69

55.2

36.8
70

55.2

36.8
71

55.2

36.8
72

55.2

36.8
73

55.2

36.8
74

55.2

36.8
75

55.2

36.8
76

55.2

36.8
77

55.2

36.8
78

55.2

34.4
79

55.2

34.4
80

55.2

34.4
81

55.2

34.4
82

55.2

34.4
83

55.2

34.4
84

55.2

34.4
85

55.2

34.4
86

55.2

34.4
87

55.2

34.4
88

55.2

34.4
89

55.2

34.4
90

55.2

32.1
91

55.2

32.1
92

55.2

32.1
93

55.2

32.1
94

55.2

32.1
95

55.2

32.1
96

55.2

32.1
97

55.2

32.1
98

55.2

32.1
99

55.2

32.1
100

55.2

32.1
101

55.2

32.1
102

55.2

30.0
103

55.2

30.0
104

55.2

30.0
105

55.2

30.0
106

55.2

30.0
107

55.2

30.0
108

55.2

30.0
109

55.2

30.0
110

55.2

30.0
111

55.2

30.0
112

55.2

30.0
113

55.2

30.0
114

55.2

28.1
115

55.2

28.1
116

55.2

28.1
117

55.2

28.1
118

55.2

28.1
119

0.0

0.0












Total Net Present Value = $11,919,219



Created by Ray Madachy at the Naval Postgraduate School. This tool was created in support of the DoD Systems Engineering Research Center (SERC) Research Topic Valuing Flexibility in Design (RT-18) . For more information contact him at rjmadach@nps.edu