Likelihood approach to character weighting and what it tells us about parsimony and compatibility
Technical Report
·
OSTI ID:6058756
The statistical framework of maximum likelihood estimation is used to examine character weighting in inferring phylogenies. A simple probabilistic model of evolution is used, in which each character evolves independently among two states, and different lineages evolve independently. When different characters have different known probabilities of change, all sufficiently small, the proper maximum likelihood method of estimating phylogenies is a weighted parsimony method in which the weights are logarithmically related to the rates of change. When rates of change are taken extremely small, the weights become more equal and unweighted parsimony methods are obtained.
- Research Organization:
- Washington Univ., Seattle (USA). Dept. of Genetics
- OSTI ID:
- 6058756
- Report Number(s):
- DOE/EV/71005-56; ON: DE82002289
- Country of Publication:
- United States
- Language:
- English
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