Software Engineering Presentation Chapter IV: About Delphi Techniques

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The document discusses the Delphi technique, a human-based estimation method where multiple experts provide estimates. It has the following key steps: 1. Identify estimation experts, a coordinator, and author to work on the project. 2. The author presents the project details to the experts. 3. Experts make independent estimates for each task and the coordinator identifies tasks where the variance is unacceptable. 4. For tasks with unacceptable variance, experts discuss assumptions until consensus is reached and the process is repeated until all tasks have acceptable variance.

Group 1, Section 4.4

ROYAL UNIVERSITY OF PHNOM PENH
 Depart : Computer Science
 Class : E2, Year4
 Batch : 13
 Lecturer : Kean Tak
 Pre Topic : Delphi Techniques
Group1

1. Ben Piseth 7. Chea Sokhom
2. Chan Kimchhun 8. Chea Sakall
3. Chan Sopov 9. Chin puttra
4. Chanthy Raksmey 10.Chhim Vichhai
5. Chao Yokchivve 11.Choun Piseth
7. Chev Toun
1

Group 1, Section 4.4
DELPHI TECHNIQUES

• The Delphi Techniques is a human-based
estimation technique.
• Human-based estimation techniques use
human experience and analytical skills to
estimate the size, productivity, and effort
required for a project.
• Delphi technique was used to when many
experts arrives the same estimate on the
basis of similar assumptions.
• Delphi technique has eight basic step:
2

Group 1, Section 4.4
DELPHI TECHNIQUES

 Step1: Identify the teams that need to
perform the estimation activity.
o Estimation experts

o Estimation coordinator

o Author

 Step2: Author present the project details
including client’s needs, system
requirements, expectation, and task to the
group of experts.

3

Group 1, Section 4.4
DELPHI TECHNIQUES

 Step3: Finalize the acceptable variance
value.
 Step4: Prepare the list of tasks and
distribute to the group of experts.
 Step5: Experts make their estimates for
each task.
 Step6: Coordinator prepares a summary of
estimate for each task, identify the
acceptable task.

4

Group 1, Section 4.4
DELPHI TECHNIQUES
Task Max Min Percentage Accepted or not
Estimatio Estimatio of Variance accepted
n n
Cost And
benefit 20 15 25 A
analysis
High level
50 30 40 NA
design
 Step7: Experts continuously discuss tasks
and assumptions where the percentage of
variance is not acceptable.
 Step8: Revert to step 5 and repeat steps
until all tasks are assigned estimate that
have an acceptable percentage of variance
value.
5

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Software Engineering Presentation Chapter IV: About Delphi Techniques

1. Group 1, Section 4.4 ROYAL UNIVERSITY OF PHNOM PENH  Depart : Computer Science  Class : E2, Year4  Batch : 13  Lecturer : Kean Tak  Pre Topic : Delphi Techniques Group1 1. Ben Piseth 7. Chea Sokhom 2. Chan Kimchhun 8. Chea Sakall 3. Chan Sopov 9. Chin puttra 4. Chanthy Raksmey 10.Chhim Vichhai 5. Chao Yokchivve 11.Choun Piseth 7. Chev Toun 1

2. Group 1, Section 4.4 DELPHI TECHNIQUES • The Delphi Techniques is a human-based estimation technique. • Human-based estimation techniques use human experience and analytical skills to estimate the size, productivity, and effort required for a project. • Delphi technique was used to when many experts arrives the same estimate on the basis of similar assumptions. • Delphi technique has eight basic step: 2

3. Group 1, Section 4.4 DELPHI TECHNIQUES  Step1: Identify the teams that need to perform the estimation activity. o Estimation experts o Estimation coordinator o Author  Step2: Author present the project details including client’s needs, system requirements, expectation, and task to the group of experts. 3

4. Group 1, Section 4.4 DELPHI TECHNIQUES  Step3: Finalize the acceptable variance value.  Step4: Prepare the list of tasks and distribute to the group of experts.  Step5: Experts make their estimates for each task.  Step6: Coordinator prepares a summary of estimate for each task, identify the acceptable task. 4

5. Group 1, Section 4.4 DELPHI TECHNIQUES Task Max Min Percentage Accepted or not Estimatio Estimatio of Variance accepted n n Cost And benefit 20 15 25 A analysis High level 50 30 40 NA design  Step7: Experts continuously discuss tasks and assumptions where the percentage of variance is not acceptable.  Step8: Revert to step 5 and repeat steps until all tasks are assigned estimate that have an acceptable percentage of variance value. 5

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Software Engineering Presentation Chapter IV: About Delphi Techniques

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Software Engineering Presentation Chapter IV: About Delphi Techniques