[ Exercise 13 ]
- Conventional approaches
explain this phenomenon and provide alternative strategies to
solve the problem.
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- Their approach converts
fuzzy data into crisp scores and determines the ranking order
of alternatives.
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Crisp scores are
assigned to the selected conversion scale (fuzzy number) to
apply a fuzzy scoring method and normalize the scores.
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- The project concentrates
mainly on reducing the dependence between the sample mean and
the sample standard deviation and developing an efficient procedure
capable of attaining the minimum quality loss.
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- The standard procedure
is for all intents and purposes inefficient, impractical, and
problematic.
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- Ullman [1989] not
only used the Analysis of Means (ANOM) to study the mean response,
but also further extended the ANOM to analyze dispersion effects.
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The Taguchi Method
deals with a one-dimensional problem and TOPSIS handles multi-dimensional
problems.
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The calculations
are performed either to get a revised least squares fit or to
estimate expected failure times for the censored values.
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The proposed optimization
procedure is made of the following steps:
Step 1: Transform the relative importance of each response into
a fuzzy number.
Step 2: Assign crisp scores to the selected conversion scale.
Step 3: Compute the quality loss.
Step 4: Determine the TOPSIS value for each trial.
Step 5: Determine the optimal factor/level combination.
Step 6: Conduct the confirmation experiment.
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- Wee [11] further
extended the conventional model to allow for shortages and assumed
that the demand rate would decrease exponentially.
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- The relative closeness
computed in TOPSIS can be used to assess the performance measurement
and optimize multi-response problems in the Taguchi method.
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- The experiment
determined how process parameters affect the silicon nitride
deposition process and, in doing so, satisfied the industrial
requirements.
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