- Problem Definition
In this week blog posting, Author would like analyze choosing a car, using Analytic Hierarchy Process.
- Development of Feasible Alternatives
There are 2 alternatives car to choose, using 5 criteria which are Safety, Design, After Sales Service, Fuel Consumption, and Performance. Price will be set aside until the benefits of the alternatives are evaluated.
- Car A: Rp. 380 Milion
- Car B: Rp. 410 Milion
- Car C: Rp. 360 Milion
- Car D: Rp. 390 Milion
- Possible Solution
The information above is arranged in a hierarchical tree as below:
Figure 1: Hierarchical tree
- Selection Criteria
Table 1 will be the relative score:
Table 1: Relative Score
Car with the highest benefit – Cost Ratio will be selected.
- Analysis and Comparison of the Alternatives
Based on table 2, the relative score will be:
Table 2: Score – for alternative solution
Table 3: Average Value
Table 4: Weighted Matrix Comparison
Table 5: Consistency Vector
Table 6: CI Table
For Matrix 5 is 1.12.
We do same steps for each criteria.
Table 7: Rank based on Criteria
The alternative ranking is the product between alternative ranking matrix and criteria ranking.
Table 8: Alternative vs Criteria Matrix
- Selection and Preferred Alternatives
After alternative ranking has been defined, we have to compare between benefits and costs (price) using benefit – cost ratio.
Table 9: Cost Normalized
Table 10: Benefit – Cost Ratio
Based on Benefit – Cost Ratio, Car B has the highest ratio. Therefore, Car B will be Author choice.
- Performance Monitoring and the Post Evaluation of Result
In order to have more accurate result, pairwise comparison matrix can be done by surveying the experts or anyone who has good understanding of the problems.
- Using AHP in Decision Making in Engineering Applications : Some Challenge
Retrived from http://bit.csc.lsu.edu/trianta/Journal_PAPERS1/AHPapls1.pdf
- AHP Tutorial.
Retrieved from https://pdfs.semanticscholar.org/7e27/b5a124c2e6829e1ff0d3e1279c2dbc9ebe2a.pdf
- W5_WW_Analytical Hierarchy Process
Retrieved from https://garudaaace2015.wordpress.com/2015/03/28/w5_ww_-analytical-hierarchy-process-2/