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=consistency index (ci, CI)=
 
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===Glossary of "Cladistics (2nd ed.)" by [[Kitching_Forey_Humphries_Williams_1998|Kitching et al. (1998)]]===
 
===Glossary of "Cladistics (2nd ed.)" by [[Kitching_Forey_Humphries_Williams_1998|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|ensemble consistency index]], [[retention_index|retention index]].
 
*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|ensemble consistency index]], [[retention_index|retention index]].
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=== Glossary of Plant Systematics (1st ed.) by [[Simpson_2006|Simpson (2006)]] ===
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* A measure of the relative amount of homoplasy in a cladogram, equal to the ratio of the minimum possible number of character state changes to the actual number of changes that occur.
  
 
== 文献(引用) ==
 
== 文献(引用) ==
 
*[[Kitching_Forey_Humphries_Williams_1998|Kitching, I. J., Forey, P. L. Humphries, C. J. & Williams, D. M.  1998.  Cladistics, 2nd ed.: the Theory and Practice of Parsimony Analysis.  -xii + 228 pp.  Oxford University Press, New York.]]
 
*[[Kitching_Forey_Humphries_Williams_1998|Kitching, I. J., Forey, P. L. Humphries, C. J. & Williams, D. M.  1998.  Cladistics, 2nd ed.: the Theory and Practice of Parsimony Analysis.  -xii + 228 pp.  Oxford University Press, New York.]]
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* [[Simpson_2006|Simpson, M. G.  2006.  Plant Systematics. -xi + 590 pp.  Elsevier Academic Press, Oxford.]]
 
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2017年5月18日 (木) 23:01時点における最新版

consistency index (ci, CI)

  • (日本語)
  • (Español)

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.

Glossary of Plant Systematics (1st ed.) by Simpson (2006)

  • A measure of the relative amount of homoplasy in a cladogram, equal to the ratio of the minimum possible number of character state changes to the actual number of changes that occur.

文献(引用)


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