Consistency
Geometric Consistency Index (GCI): Log-quadratic consistency measure for PCMs
Aguarón, J., Moreno-Jiménez, J.M. · 2003
Strengths
- •Continuous and differentiable
- •Compatible with geometric mean priority derivation
- •Size-specific thresholds available
Limitations
- •Thresholds approximate (Monte Carlo derived)
- •Less widely recognized than Saaty CR in practice
Method assistant
Grounded explanations: it explains the method, it does not compute.
Assumptions to verify
- •PCM entries are positive and reciprocal
- •Weights derived via geometric mean (LLSM)
When not to use
- •Saaty eigenvector weights are used: Saaty CR is then more coherent
How to cite
Aguarón, J.; Moreno-Jiménez, J.M. (2003). The geometric consistency index: Approximated thresholds. European Journal of Operational Research. https://doi.org/10.1016/S0377-2217(02)00255-2