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

杨利霞

Maximum Likelihood Method on The Construction of

Phylogenetic Tree for Identification the Spreading of

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SARS Epidemic

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There are several phylogenetic tree construction
+ C; v! E* B/ C" U% w& Mmethods that can be used to illustrate the spread of disease
, S6 B  {! |: ]1 m3 Y+ x0 Lepidemics. One of the methods used is probability-based
! L8 \$ z5 a  o* pmaximum likelihood. This paper explains how to identify the
spread of the SARS epidemic in the world using the formation of
  \/ \' {- u, \7 G* Hphylogenetic trees using the maximum likelihood method. The
4 D: ?4 L0 T0 V3 U6 p2 [0 I  Toutput obtained was a description of the spread of SARS virus
2 S- L& q2 m( U  W( V2 @with the selection of tree candidates after performing a heuristic
search of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
5 N5 B8 U2 Y/ ~& L9 h: a/ Yindicating that the initial spread of the SARS epidemic started
  Z* [+ G0 i3 o* r$ S# hfrom Guangzhou.

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