On Generalizations Of The G Index And The Phi Coefficient To Nominal Scales.

@article{Janson1979OnGO,
  title={On Generalizations Of The G Index And The Phi Coefficient To Nominal Scales.},
  author={Svante Janson and Jan Vegelius},
  journal={Multivariate behavioral research},
  year={1979},
  volume={14 2},
  pages={255-69}
}
If the same categories are used for two nominal scale variables, this information should be used in similarity measures between those variables. Two such similarity measures, one proposed by Goodman & Kruskal and one (kappa) by Cohen, are examined. Two alternative coefficients, called C and S are further proposed. They are found to be generalizations of the G index and the phi coefficient respectively. Both of them seem to have many desirable characteristics, e.g., they are both E-coefficients… CONTINUE READING