Use Case Points (UCP)

• Unadjusted Use Case Weight (UUCW)

Use Case Classification	No. of Transactions	Weight
Simple	1 to 3 transactions	5
Average	4 to 7 transactions	10
Complex	8 or more transactions	15

• Unadjusted Actor Weight (UAW)

Actor Classification	Type of Actor	Weight
Simple	External system that must interact with the system using a well-defined API	1
Average	External system that must interact with the system using standard communication protocols	2
Complex	Human actor using a GUI application interface	3

• Technical Complexity Factor (TCF)

  TCF = 0.6 + (TF/100)

Factor	Description	Weight
T1	Distributed system	2.0
T2	Response time/performance objectives	1.0
T3	End-user efficiency	1.0
T4	Internal processing complexity	1.0
T5	Code reusability	1.0
T6	Easy to install	0.5
T7	Easy to use	0.5
T8	Portability to other platforms	2.0
T9	System maintenance	1.0
T10	Concurrent/parallel processing	1.0
T11	Security features	1.0
T12	Access for third parties	1.0
T13	End user training	1.0

• Environmental Complexity Factor (ECF)

  • ECF = 1.4 + (-0.03 x EF)

Factor	Description	Weight
E1	Familiarity with development process used	1.5
E2	Application experience	0.5
E3	Object-oriented experience of team	1.0
E4	Lead analyst capability	0.5
E5	Motivation of the team	1.0
E6	Stability of requirements	2.0
E7	Part-time staff	-1.0
E8	Difficult programming language	-1.0

• Corresponding interpolation values (S) of Environmental Complexity Factor (ECF)

Result	Interpolation value (S)
> 0	0.05
> 1	0.1
> 2	0.6
> 3	1.0

• Experience Stability Estimate (ES)

$$ES = \sum_{i=1}^8 S_i$$

Result	Estimate duration (P - hours per use case point)
< 1	48
>= 1	32
>= 3	20

• Unadjusted Use Case Weight (UUCW)

  UUCW = (Total No. of Simple Use Cases x 5) + (Total No. Average Use Cases x 10) + (Total No. Complex Use Cases x 15)

• Unadjusted Actor Weight (UAW)

  UAW = (Total No. of Simple Actors x 1) + (Total No. Average Actors x 2) + (Total No. Complex Actors x 3)

• Use Case Points (UCP - AUCP)

  UCP(AUCP) = (UUCW + UAW) x TCF x ECF (UCP)

• Estimate Effort (EE)

  EE = AUCPxP (Hours)

• Step by step Use Case Points Methods

  

• Review App Demo

  • Create New Project

  

  • Use Case & Actor

  

  • Technical Complexity Factor

  

  • Environmental Complexity Factor

  

  • Estimate Effort