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Measuring Support for Phylogenies: The “Proportional Support Index”
Author(s) -
Lee Michael S.Y.
Publication year - 1999
Publication title -
cladistics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.323
H-Index - 92
eISSN - 1096-0031
pISSN - 0748-3007
DOI - 10.1111/j.1096-0031.1999.tb00258.x
Subject(s) - cladogram , index (typography) , character (mathematics) , measure (data warehouse) , phylogenetic tree , statistics , mathematics , biology , computer science , data mining , cladistics , genetics , geometry , world wide web , gene
The total support index (Bremer, 1994), a measure of cladogram support, is influenced both by character incongruence and by uninformative characters. A modified version of this index is therefore proposed—the proportional support index. This index measures the actual support for a cladogram relative to the maximum potential support as determined by the number of informative characters. This index is not distorted by uninformative characters and is thus a more accurate means to compare the strength of phylogenetic signals in different data sets.