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Outranking
SIR - Superiority and Inferiority Ranking
Outranking-utility hybrid (PROMETHEE+SAW+TOPSIS)
Xu, X.2001doi:10.1016/S0377-2217(00)00101-6 ↗
Overview
This manifest selects the valid SIR-SAW complete-ranking variant: superiority and inferiority indexes are aggregated by criterion weights, and alternatives are ranked by n-flow descending. Omit preference_functions only when the Type-I usual criterion is intended.
- Output
- preference flow, higher is better
- Data
- Crisp, complete numeric matrix
- Weights
- Needs a weight source
- Size
- 2+ alternatives, 3-12 criteria works best
- Used for
- Complex multi-stakeholder decisions
Look elsewhere when
- •Small dataset (m<3). Outranking benefit minimal.
- •Compensatory preferences acceptable. Simpler ranking method.
Assumptions to verify
- Decision-maker can specify preference (p), indifference (q), and veto (v) thresholds
- Non-compensatory preference structure
Edge cases and pitfalls
SIR is a family, not one universal scalar ranking. This implementation is explicitly SAW aggregation plus net-flow complete ranking; Xu's partial intersection ranking and other aggregation procedures are not silently substituted.
Threshold symbols follow the original generalized-criterion parameterization used here: Level reaches strict preference after q+p, while Linear reaches it after s+r. The p and r inputs are widths, not absolute upper thresholds.
Missing or invalid thresholds must not collapse V-shape, Level, Linear, or Gaussian into the usual preference function. The kernel rejects such inputs.
Works with
How to cite
Xu, X. (2001). The SIR method: A superiority and inferiority ranking method for multiple criteria decision making. European Journal of Operational Research. https://doi.org/10.1016/S0377-2217(00)00101-6
System ID, as it appears in reports and the API
SIR