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
+ J" n+ B1 M# n8 Vmethods that can be used to illustrate the spread of disease
epidemics. One of the methods used is probability-based
' Y/ u4 @1 y- M% y6 Imaximum likelihood. This paper explains how to identify the
2 \! r; `" O# O4 y3 k. x4 g* |" `0 R$ Cspread of the SARS epidemic in the world using the formation of
  u7 Z# ]/ n2 e( X) |% Aphylogenetic trees using the maximum likelihood method. The
output obtained was a description of the spread of SARS virus
0 m0 S$ f$ Q. J* Hwith the selection of tree candidates after performing a heuristic
: a) q, e/ p/ o2 j6 Y% b9 Hsearch of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
8 V5 g8 U. q1 @' u4 S. Qindicating that the initial spread of the SARS epidemic started
, |2 J1 n. c1 b* \# b" Tfrom Guangzhou.
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