Grey-TODIM — Grey extension of TODIM
GREY-TODIM (Grey-TODIM — Grey extension of TODIM) is a ranking multi-criteria decision-making (MCDM) method introduced by Gomes, L. F. A. M., Lima, M. M. P. P. in 1992. It turns a decision matrix of alternatives scored on multiple criteria into a structured, reproducible result.
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Method map
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When to use it
grey-todim extends TODIM to handle Grey uncertainty. All arithmetic operations (normalisation, weighting, distance computation) are performed using Grey Interval Number (GIN: [x̲, x̄]) algebra. The final scores are defuzzified via whitenisation: (x̲ + x̄)/2 before ranking.
Strengths & limitations
- Follows a transparent, reproducible computational procedure that can be audited step by step.
- Handles multiple criteria of differing scales and units within a single decision matrix.
- Assumes full compensation — a strong score on one criterion can offset a weak score on another.
Sources
- (). UNCONFIRMED — GREY-TODIM specific seminal not confirmed via systematic literature search. PENDING link ↗
How to cite this page
ScholarGate. (2026, June 2). Grey-TODIM — Grey extension of TODIM. ScholarGate. https://scholargate.app/en/decision-making/grey-todim
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
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