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Related Experiment Videos

Support versus corroboration.

Mary G Egan1

  • 1Division of Invertebrate Zoology, American Museum of Natural History, 79th Street, Central Park West, New York, NY 10024, USA. egan@amnh.org

Journal of Biomedical Informatics
|January 18, 2006
PubMed
Summary
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Phylogenetic tree support metrics offer heuristic value for data precision but do not directly indicate accuracy or aid tree selection. Direct support measures may aid in identifying falsifiers for hypothesis testing.

Area of Science:

  • Evolutionary Biology
  • Phylogenetics
  • Systematic Biology

Background:

  • Numerous metrics exist to evaluate the reliability of phylogenetic trees.
  • Commonly used measures of tree and branch support are prevalent in phylogenetic analysis.

Purpose of the Study:

  • To critically examine the relationship between phylogenetic tree support metrics and Popperian corroboration.
  • To rebut claims that support measures directly indicate phylogenetic tree accuracy or inform tree choice.

Main Methods:

  • Description and discussion of commonly used phylogenetic tree support metrics.
  • Analysis of the conceptual link between support measures and Popperian corroboration.
  • Evaluation of the role of direct support measures versus resampling/randomization methods.

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Main Results:

  • Support measures are considered heuristic for data precision within a phylogenetic framework, reflecting data perturbations.
  • No direct link was found between the calculation of support measures and corroboration.
  • Direct support measures, unlike resampling methods, may assist in searching for falsifiers.

Conclusions:

  • Phylogenetic support metrics do not directly measure tree accuracy or guide tree selection.
  • Direct support measures can be valuable tools for falsification within phylogenetic inference and hypothesis testing.