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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& E- X, A- l7 _& U: ?" wThere are several phylogenetic tree construction
methods that can be used to illustrate the spread of disease
7 C4 t+ d7 J% N1 Jepidemics. One of the methods used is probability-based
+ G/ K9 n! X' ?, B! emaximum likelihood. This paper explains how to identify the
spread of the SARS epidemic in the world using the formation of
phylogenetic trees using the maximum likelihood method. The
output obtained was a description of the spread of SARS virus
+ W0 T/ D: R( x" S- c2 ywith the selection of tree candidates after performing a heuristic
' F1 u3 t" [5 i- ~  B3 @search of the Stepwise Addition method. The result of the research
. ]. r9 v. M& T6 d$ }8 p3 T( G& Fshowed that the closest distance to the palm civet is GZ 02/18/03
$ O" K/ h; M* `- o  Dindicating that the initial spread of the SARS epidemic started
2 Q. |# \  `3 Q4 k3 A" G* Pfrom Guangzhou.