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
( c, |% s9 }. u1 a/ cepidemics. One of the methods used is probability-based
- H" e6 O6 e" Z8 Dmaximum likelihood. This paper explains how to identify the
6 g" z% E7 D% ~spread of the SARS epidemic in the world using the formation of
, p" p( o( I8 I$ b  u7 Y6 c/ Y) Fphylogenetic trees using the maximum likelihood method. The
3 B" K# o) n" a; p. Poutput obtained was a description of the spread of SARS virus
with the selection of tree candidates after performing a heuristic
search of the Stepwise Addition method. The result of the research
+ R1 I& z# ^: v5 w2 Nshowed that the closest distance to the palm civet is GZ 02/18/03
% R6 g9 o2 F' Q: o* Bindicating that the initial spread of the SARS epidemic started
0 A- l' O7 K2 k: b. g) c5 A0 ]from Guangzhou.


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