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
, v' L' T+ U8 N0 ]2 fepidemics. One of the methods used is probability-based
maximum likelihood. This paper explains how to identify the
# k3 b: E, A0 u4 a& d% y4 Ospread of the SARS epidemic in the world using the formation of
& e1 V% S; }3 F6 w" M- I9 [phylogenetic trees using the maximum likelihood method. The
2 T. O4 _. q$ q% d6 \1 youtput obtained was a description of the spread of SARS virus
with the selection of tree candidates after performing a heuristic
4 E1 d# F  M$ G4 Jsearch of the Stepwise Addition method. The result of the research
# _7 s' Z6 ~' ~$ Q: U0 Bshowed that the closest distance to the palm civet is GZ 02/18/03
indicating that the initial spread of the SARS epidemic started
& K, y; J9 w/ f* @( Wfrom Guangzhou.

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