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multi-method-triangulation

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Apply 2-3 MCDA methods to the same candidates, compare rankings, and identify method-sensitive options.

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Multi-Method Triangulation

Score the same set of alternatives using 2-3 MCDA methods, compare ranking differences, identify method-sensitive options, and improve decision robustness.

Stages

  1. Method Selection — Select 2-3 complementary MCDA methods
  2. Parallel Scoring — Score and rank candidates using each method separately
  3. Rank Comparison — Compute ranking consistency (Kendall tau, Spearman rho)
  4. Sensitivity Identification — Identify alternatives whose rankings change significantly across methods
  5. Method Sensitivity Report — Analyze causes of differences and provide recommendations

Available SOPs

  • alternative-scoring — Score alternatives (invoked once per method)
  • rank-comparison — Ranking consistency comparison
  • method-sensitivity-report — Method sensitivity analysis report

Execution Guidance

  • Method selection should cover different paradigms (e.g., compensatory WSM + non-compensatory ELECTRE + compromise VIKOR)
  • All methods use the same criteria and weights; only aggregation logic differs
  • Kendall tau > 0.8 indicates high inter-method consistency, results are trustworthy
  • tau < 0.6 indicates method choice significantly impacts results, requiring deeper analysis
  • Pay special attention to alternatives with ranking differences >= 3 positions
  • Final recommendations should clarify which conclusions are method-independent (robust) and which depend on method choice

Minimum Yield

Ranking comparison across >=2 methods + difference analysis

Available SOPs

Optional, no fixed order; the final leaf is always a sop.

SOPWhen to use
alternative-scoringScore each candidate alternative against all criteria to produce a score matrix.
method-sensitivity-reportAnalyze how the choice of MCDA method affects final rankings and identify method-sensitive alternatives.
rank-comparisonCompare multiple ranking results to assess agreement and identify divergent items.