This presentation discusses use case point estimation, which is a method for estimating the size and effort of an application based on its use cases. It involves calculating unadjusted use case weights and actor weights, as well as technical and environmental complexity factors, and plugging them into an equation to determine the unadjusted use case points. The unadjusted use case points are then multiplied by a productivity factor to estimate the effort in hours of work.

1. Benghazi University
Faculty of Information
Technology
Department of Graduate Studies
ABDELGHANI YOUNIS ABDELGHANI
Presentation about
USE CASE POINT ESTIMATION
2012/2013

2. Use Case Points Estimation
 INTRODUCTION:
 Use Case Points (UCP) is an estimation
method that provides the ability to estimate
an application’s size and effort from its
use cases. Based on work by Gustav Karner
in 1993, UCP analyzes the use case actors,
scenarios and various technical and
environmental factors and abstracts them
into an equation.

3. In UCP approach estimation divided
into three parts:
 A. Calculate no of Actors.
 B. Calculate no of Use Cases
 C. Calculate TCF and ECF
 the equation to calculate UCP :
 UCP = (UUCP) x TCF x ECF x PF
 UUCP=UUCW + UAW

4. Online shopping system

5. Use Case Points Estimation
 UUCP : Unadjusted Use Case Weight
 TCF : Technical Complexity Factor
 ECF : Environmental Complexity Factor
 UUCW : Unadjusted Use Case Weight
 UAW : Unadjusted Actor Weight
 PF : PRODUCTIVITY FACTOR

6. UUCP=UUCW + UAW
 Unadjusted Use Case Weight(UUCW) :
Use Case No. of Weight
Classification Transactions
Simple to 3 1 5
transactions
Average to 7 4 10
transactions
Complex or more 8 15
transactions

7. Unadjusted Actor Weight (UAW)
Actor Type of Actor Weight
Classification
Simple External system that must interact
with the system using a well- 1
defined API
Average 2
External system that must interact
with the system using standard
communication protocols (e.g.
(TCP/IP, FTP, HTTP, database
Complex Human actor using a GUI 3
application interface

8. Technical Complexity Factor (TCF) :
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

9. Technical Complexity Factor (TCF)
each technical factor has value from 0 to 5
 0 – means that is factor insignificant for the project .
 3 - means an average impact .
 5 - means a strong impact .
 TCF=0.6+(0.01 *total(TF)

10. Environmental Complexity Factor (ECF)
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 0.5
Lead analyst capability
E5
Motivation of the team 1.0
E6
Stability of requirements 2.0
E7 1.0 -
Part-time staff
E8 1.0 -
Difficult programming language

11. Environmental Complexity Factor (ECF)
each Environmental factor has value from 0 to 5
 0 – means that is factor insignificant for the
project .
 3 - means an average impact .
 5 - means a strong impact .
 ECF =1.4+(-0.03 *total(EF)
 UCP = (UUCP) x TCF x ECF

12. ‫‪The last stage in the UCP method‬‬
‫‪ ‬المرحلة الخيرة من ‪ UCP‬هو تحويل ‪ UCP‬الئ قيم من‬
‫الجهد في العمل يحسب علئ شكل ساعة عمل ويتم ذلك‬
‫عن طريق ضرب ‪ UCP‬في عامل النتاجية‬
‫‪ ‬وتباينت قيمة ‪ PF‬من 51 الى 03 ساعة عمل لكل‬
‫‪ UCP‬واحدة ولكن البحاث التي قام بها صاحب الطريقة‬
‫تم اقتراح قيمة 02 الى ‪PF‬‬
‫‪Estimation = UCP * PF‬‬

13. references
http://www.codeproject.com
http://www.ibm.com/developerworks/rational/library
http://www.modernanalyst.com/Resources

14. THANK YOU FOR YOUR
ATTENTION