consistency index (ci, CI)
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Definition
Glossary of "Cladistics (2nd ed.)" by Kitching et al. (1998)
- A measure of the amount of homoplasy in a character relative to a given cladogram. The consistency index is calculated as the ratio of m, the minimum number of steps a character can exhibit on any cladogram, to s, the minimum number of steps the same character can exhibit on the cladogram in question. See also ensemble consistency index, retention index.