1. THE FAMU-CIS ALUMNI SYSTEM
Estimation
THE FAMU-CIS ALUMNI SYSTEM
CEN5055
Project Management
Feb 23rd 2009
Jamin Bao
Martin Brown
Sherene Campbell
Saidi Mchumo
Xian Long
TEAM ORANGE

2. Introduction Tools used for estimation Function Points DVC
Units of measure based on functionality
DVC
The amount of data going through the system
Cocomo “COnstructive COst MOdel”
model for estimating effort, cost, and schedule for software projects
Developed 1981
Cocomo II
Same as Cocomo but for newer/more modern practices
Developed 1997 – published in 2001

3. Proposed SSS Matrix
21 Data Tables
11 Forms
7 Reports
Proposed Matrix

4. 7934 LINES OF CODE (SLOC) 9640 10410 Team Member Lower Bound Expected
Upper Bound
Jiamin Bao
7900
8600
9100
Martin Brown
4340
6507
10143
Sherene Campbell
3530
4515
6125
Saidi Mchumo
8530
10850
Xian Long
9850
12020
Average
6830
7934
9647
9640
10410

5. FUNCTION POINTS:::OVERVIEW
What is a Function Point?
A standard unit of measure that represent the functional size of a software application.
An application can be measured by the number of function points it delivers to the users of the application.

6. A SIMPLE SIX STEP COUNTING PROCESS
Identify all instances of each function type in the system.
Assign a complexity weight to each instance of a function type.
Calculate a weighted sum for each function type.
Determine the unadjusted function count (FC).
Determine the Value Adjustment Factor (VAF).
Calculate FP Count.

7. Calculating Function Points
Calculate unadjusted Function Count (FC)
Determine the Value Adjustment Factor (VAF)
Calculate Function Points

8. IDENTIFY FIVE STANDARD “FUNCTION TYPES” AND COMPLEXITY WEIGHT
Data Functions:
Internal logical files (ILFs)
External interface files (EIFs)
Transactional Functions:
External Inputs (EIs)
External Outputs (EOs)
External Inquiries (EIs)

9. Calculate unadjusted function count (FC)

10. Function Points for Alumni system Results

11. LINES OF CODE (SLOC) ESTIMATE FROM FUNCTION POINTS
Past date indicate that one FP translate into 25 times of code LOCs = 25 * 256 =6400 (approximately)
Factor
SLOC 25
6400 45
11520 60
15360

12. Data Volume Counter:::Data Dictionary

13. DATA VOLUME COUNTER:::DATA DICTIONARY

14. DATA VOLUME COUNTER:::DATA DICTIONARY

15. DATA VOLUME COUNTER:::OVERVIEW
Needs
Data Dictionary
Purpose
To calculate the input data volume

16. DATA VOLUME COUNTER:::RESULTS (FROM XIAN LONG)
DVC = 146 vs. function point 256

17. DATA VOLUME COUNTER:::RESULTS (FROM MARTIN)
DVC = 161 vs. function point 256

18. Cocomo II ::: Overview
To develop a software cost and schedule estimation model tuned to the life cycle practices of the 1990's and 2000's.
To develop software cost database and tool support
To provide a set of tools and techniques for evaluating the effects of software technology improvements on software life cycle costs and schedules.

19. Cocomo II:::Models The Post-Architecture Model
Most detailed COCOMO 2 model.
Used after you've developed your project's overall architecture.
It has new cost drivers, new line counting rules & new equations.
The Early Design Model
Get rough estimates of a project's cost and duration before you've determined it's entire architecture.
It uses a small set of new Cost Drivers, and new estimating equations. Based on Unadjusted Function Points or KSLOC.
Application composition model
Used when software is composed from existing parts.
Reuse model
Used to compute the effort of integrating reusable components.

20. Cocomo II:::Early Design Model
Estimates can be made after the requirements have been done
Based on a standard formula for algorithmic models
Effort (person-months) = A ´ SizeB ´ M where
M = PERS ´ RCPX ´ RUSE ´ PDIF ´ PREX ´ FCIL ´ SCED;
A = 2.94 in initial calibration
Size in KLOC
B varies from 1.1 to 1.24 depending on novelty of the project, development flexibility, risk management approaches and the process maturity.

21. Cocomo II ::: Scale Factors (B)

22. Cocomo II ::: Effort Adjustment Factor(M)EM
Name
RCPX
Product Reliability and Complexity
RUSE
Developed for Reusability
PDIF
Platform Difficulty
PERS
Personnel Capability and Mapping Example
PREX
Personnel Experience
FCIL
Facilites

23. Cocomo II ::: Results
results

24. Conclusion Function Points Team DVC Value: 256 SLOC: 11520
SLOC: 7934 (average)
Martin: 161
Xian: 145
Cocomo I
Cocomo II
Effort: 21 (Likely)
Effort: 28.7 (Likely)
Cost:
Student: $50,399
OutSource: $210,000
Student: $68,885
OutSource:$287,022.62

25. Questions ?