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Быстрая оценка ИТ-проекта Максим Русаков [email protected]

Оценка ИТ-проекта на ранней стадии. Практический опыт применения методологии COSMIC (Максим Русаков)

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, .2

Reference Class Forecasting(Daniel Kahneman) 2002

For example, a group of students enrolling at acollege were asked to rate their future academic performance relative to their peers intheir major. On average, these students expected to perform better than 84% of theirpeers, which is logically impossible. The forecasts were biased by overconfidence.Another group of incoming students from the same major were asked about theirentrance scores and their peers' scores before being asked about their expectedperformance. This simple diversion into relevant outside-view information, which bothgroups of subjects were aware of, reduced the second group's average expectedperformance ratings by 20%. That is still overconfident, but it is much more realisticthan the forecast made by the first group (Lovallo and Kahneman 2003: 61).4

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Always Reference beforeForecasting : :2 3 :7 10 40%

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8 :Always Reference beforeForecasting

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IFPUGCOSMICMK IINESMAFiSMA

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IFPUGCOSMICMK IINESMAFiSMA

cosmicon.com

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COSMIC =

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21

COCOMO IISEERSLIM

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COCOMO IISEERSLIM

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A, B - , ..

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Northrop Grumman (USA) 2%

Northrop Grumman

123600 22 000 27

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100 : 1 0.5 FTE (100 : 1)1.0 FTE (200 : 1) 3.5 FTE (700 : 1)

, .29

COSMIC

COSMIC

E W X31

1 30 :

33

1 30 :

(E)(R) T(t)(R) (E) T(W) = 5

34

2 5 : /

2 5 : / (E) T(R) T(E) (X) = 4

36

3 1 : ,

3 1 : , (E) (X) = 2

38

, 15 24 32:11

, .39

4

4 60 :

3 = 11 1 3.7 4 = 3.7 4 15

7%43

4 60 : (E) (E) (X) = 3

44

, 15 24 32 434:1415

7%,

5%45

-

47

6 5 11 8 18 11 39 16

COSMIC49

Using web objects for development effort estimation of web applicationsWeb Engineering, Lecture Notes In Computer ScienceWeb , ERX3C * (ERX)C * 3 (C = 1,2,3) ()E1 ()ERX R3 1

COSMIC50

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, , 15551030523 210

1000 COSMIC

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Always Reference before Forecasting:

58

: COSMIC

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:

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