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

SARS Epidemic

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There 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
- \7 J. v' I+ O7 cmaximum likelihood. This paper explains how to identify the
; ?3 e) ?% n8 b. y/ f  Uspread of the SARS epidemic in the world using the formation of
phylogenetic trees using the maximum likelihood method. The
0 E. n. R1 _2 U8 b3 goutput obtained was a description of the spread of SARS virus
  t/ [1 q& c! O$ ~% ewith the selection of tree candidates after performing a heuristic
8 s4 ?0 ~6 T5 O' Q8 ~search of the Stepwise Addition method. The result of the research
$ E7 @8 T0 V3 V2 Zshowed that the closest distance to the palm civet is GZ 02/18/03
: j! E3 A9 x6 S# \8 bindicating that the initial spread of the SARS epidemic started
; k" @1 p! q. q% B1 @% N7 w: U% Xfrom Guangzhou.

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