7/22/2008
The day before yesterday, My Teacher Dr. Wang. had assigned Postgraduate
Students a HW and asked us to read before today-night's meeting. The topic
about the reference is AHP. How to make a choice in a complex, subjective
situation with more than a few realistic options? Combining Qualitative and
Quantitative to evaluate information and make decision that are easy to defend.
Snapshot of AHP
- Build your "hierarchy"
- Define your goal or objective.
- Identify the choices you're considering.
- Outline the major factors you'll use to evaluate each option.
- Identify criteria (and any subcriteria of these) that you need to consider for each of these major factors. Link these to the major factors (see figure 1 below for an example of this.)
- Continue to build a hierarchy of decision criteria until all factors are identified and linked.
- Establish your priorities
- Using paired comparison, determine your criteria preferences (perhaps A is a little more preferred than B, B is much more preferred than C, and so on).
- Rate these preferences from 1–9.
- Repeat this for each level in your hierarchy. (The example below will make this clearer.)
- Synthesize, or combine, the ratings
- Calculate weighted criteria scores that combine all of the ranking data.
- Compare the alternatives
- Using those combined scores, calculate a final score for each alternative.
Tip 1:
If you're familiar with Paired Comparison Analysis, then this approach might sound familiar. The power of AHP is that it uses paired comparison to determine the relative weights of various criteria, and then it transfers them across each level of criteria to calculate overall weightings. From this you can calculate an objective score for each alternative.
Tip 2:
This is a complicated approach, and one that needs careful thought and calculation. Only use it if Paired Comparison Analysis isn't giving you the answer you want, or where the problem to be solved is complex and significant, and involves many different subjective factors.
What a good idea to use AHP to preparation my Angel more efficiency it is.
Angel is hot !
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