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Bibliographic Item (1.0)

Miranda01
  1. Eduardo Mianda
  2. Improving subjective estimates Using Paired Comparisons
  3. IEEE Software Magazine V18n1(Jan/Feb 2000)pp87-91
  4. =DEMO MATHEMATICS ESTIMATION
  5. Use pairwise comparisons to form a judgment matrix. Review internal inconsistencies and then derive ratio scale. Use scale and known reference values to get better estimates.
  6. Map verbal judgments to ratios: equal+>1 | bigger+>1.75 | smaller . 0.57 | slightly bigger +> 1.25 | slightly smaller +> 0.80 | much bigger +> 4.0 | much smaller +> 0.25 | extremely bigger > 7.00 | extremely smaller +> 0.13
  7. judgment_matrix:= matrix(1..n><1..n -> ratio ).
  8. geometric_mean[r] =v[r],
  9. v[r] = a[r,*] **(1/n).
  10. ratio[r] = v[r]/v[+].
  11. inconsistency := sqrt(+[r] (+[c:r+1..n] (ln(a[r,c]) - ln(v[r]/v[c]) ))) /((n-1)*(n-2)/2).

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