Decision Making Process Flashcards
Define FOM:
Figure of merit
What are two common methods of making project decisions?
- Decision Matrix (Pugh Matrix)
2. Analytical Hierarchy Process (AHP)
True or False: Selecting the right concept of operations and systems architecture is not one of the first things to do in the design process.
False
Steps to making systems decisions:
- Establish evluation criterion
- Establish importance between said criterion
- develop alternative concepts to meet objectives
- Evaluate alternatives based on criterion
- Select best tentative alternative
- Evaluate best alternative
- Finalize decision or return to step 3
Define Figure of Merit:
A metric by which a stakeholder’s expectations will be judged in assessing satisfaction with a product or system.
A good FOM has the following qualities:
- Independent of particular solution
- Simple to state and unambiguous
- Easy to measure (use a ruler or something haha)
What do we use FOM’s for?
- Determine how concepts meet requirements
- Compare and rank alternatives
- Assess relative sensitivity of mission to operational assumptions
Quantitative or Qualitative?
Total Landed Mass
Quant
Quantitative or Qualitative?
Scalability
Quant
Quantitative or Qualitative?
Reliability
Quant
Quantitative or Qualitative?
Ability to repair
Qual
Quantitative or Qualitative?
Increase in crew radiation exposure
Qual
Key word increase?
Quantitative or Qualitative?
Similarity to lunar mission
Qual
Quantitative or Qualitative?
Complexity
Qual
Steps of Matrix Method:
- Brainstorm Alternatives
- Make a default choice
- List important decision criteria
- Fill in 1, 0, or -1 ratings (better, equiv, worse)
- Adjust weights for unequal criteria (more/less important)
- Do you feel good about best choice?
- Assess the results and adjust
____ Determines the best choice through pair-wise comparisons.
AHP (Analytical hierarchy process)
AHP Steps:
- Describe alternatives
- Generate FOM’s
- Decompose FOMs into evaluation attributes
- Determine relative importance of FOMs through prioritization matrices
- Determine relative relationship between alternatives and FOMs
- Iterate
AHP suffers from a phenomena known as _________.
Rank reversal
AHP assumes/imposes ____ among alternatives.
Ranking/Hierarchy
____ Method uses a 1-9 scale for ranking attribute’s relative strength to one another.
AHP
____ is used to compare both quantitative and qualitative FOMs in the same framework.
AHP
True or False: AHP method should NOT be used to compare alternatives where a spectrum of preference exists.
False
True or False: AHP should be used for properties that must be met in a YES or NO fashion.
False
True or False: AHP is not appropriate for all decisions and comparisons.
True
