Maximum Likelihood Method on The Construction of Phylogenetic Tree for Ident...

杨利霞

Maximum Likelihood Method on The Construction of

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Phylogenetic Tree for Identification the Spreading of

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SARS Epidemic

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/ j4 I" m) S; D! sThere are several phylogenetic tree construction
methods that can be used to illustrate the spread of disease
epidemics. One of the methods used is probability-based
& @* K; H  A# {% M) _maximum likelihood. This paper explains how to identify the
spread of the SARS epidemic in the world using the formation of
$ Q1 h. C5 q  |+ u3 o+ c4 Jphylogenetic trees using the maximum likelihood method. The
6 Z: d- R8 E/ D& z! youtput obtained was a description of the spread of SARS virus
with the selection of tree candidates after performing a heuristic
% Q3 v1 E1 P- j. w# D, S  Csearch of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
  @+ o: p" F: ~9 j' jindicating that the initial spread of the SARS epidemic started
from Guangzhou.
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