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การประมาณการแรงงานด้วยวิธีโคโคโม PowerPoint PPT Presentation


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การประมาณการแรงงานด้วยวิธีโคโคโม. อ.วิวัฒน์ ชินนาทศิริกุล. บทนำ. COCOMO ย่อมาจาก CO nstruction CO st MO del พัฒนาโดย โบแอม (ค.ศ. 1981 ) เรียกว่า COCOMO81 หรือ COCOMOI วัตถุประสงค์ เพื่อประมาณการแรงงานและเวลาที่ต้องใช้ในการพัฒนาซอฟแวร์

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การประมาณการแรงงานด้วยวิธีโคโคโม

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4766500

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  • COCOMO COnstruction COst MOdel (..1981) COCOMO81 COCOMOI

  • ..2004 COCOMO COCOMO2000 COCOMOII


Cocomoi

COCOMOI

  • COCOMOI (effort) (LOC)

  • 3

    1. (Basic Model)

    2. (Intermediate model)

    3. (Advance Model)


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  • (Cost Driven)


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1. 3

1.1 (Organic Model)

1.2 (Semi-detached Model)

1.3 (Embedded Model)

2.

3. (Effort Adjustment Factor)


1 1 organic model

1.1 (Organic Model)

  • 50 KLOC

  • (in-house environment)

  • (static environment)


1 2 semi detached model

1.2 (Semi-detached Model)

  • 300 KLOC


1 3 embedded model

1.3 (Embedded Model)


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  • (-) = axKLOCb

    = cXd

    a, b, c, d


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33 3 kloc

33.3 KLOC

  • (-) = 3.0 x KLOC1.12

    =3.0 x 33.31.12

    = 152-

  • = 2.5 x 152

    =14.5

  • = 152/14.5

    =11


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  • (-) = a xKLOCbx

    = c Xd

    a, b, c, d


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  • organic

    • data entry 0.6 KLOC

    • data update 0.6 KLOC

    • query 0.8 KLOC

    • report gen. 1.0 KLOC

    • TOTAL 3.0 KLOC

  • cost driver attribute

    • Complexity high 1.15

    • Storage high 1.06

    • Experience low 1.13

    • Programmer capability low 1.17


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  • =

    =

  • (-) =axKLOCbx

    =

    =

  • =c Xd

    =


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  • 2 (Cost Driver) 15 4


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  • (very low) (extra high)

  • 2

  • 6.11 6.12 (RELY) (1.40)


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  • RELY (0.75) (CPLX)

  • 6.12 CPLX (1.30)

  • CPLX (0.70) 6.13


Cocomoii

COCOMOII

  • .. 1981

  • COCOMO81

    (prototyping)

  • (components composition) 4

    (4th generation language)


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  • COCOMOI

  • COCOMOII 3

  • COCOMOII /


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  • 3 COCOMOII

    1.

    2.

    3.


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1.

  • (Object Points)


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2.

  • LOC


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3.


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PM = (-)

NOP = (New Object Point)

%reuse =

PROD =


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  • 1.

    3 GL

    (3 General Language)

    2. 3

    2


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3. -


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4.

5. (NOP)

6. (PROD) PROD

7. (PM) = NOP/PROD


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  • (effort) =2.94 X sizeB x M + PMauto

    size (KLOC)

    M (effort multipliers) 7


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  • RCPX (Reliability and complexity)

  • RUSE (reuse requires)

  • PDIF (Platform difficulty)

  • PERS (Personal Capability)

  • PREX (Personal Experience)

  • FCIL (SupportFacilities)

  • SCED (Schedule)

    M = PERS x RCPX x RUSE x PDIF x PREX x FCIL x SCED


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  • ..


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