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

杨利霞

Maximum Likelihood Method on The Construction of

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Phylogenetic Tree for Identification the Spreading of

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SARS Epidemic

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% Z! I! W; `& w& m; NThere are several phylogenetic tree construction
# b& [2 q; |5 x; r8 G& ~1 Umethods that can be used to illustrate the spread of disease
epidemics. One of the methods used is probability-based
& [9 p4 E: o3 i: l# `maximum likelihood. This paper explains how to identify the
7 s  K; O( W7 V' [0 d) k1 U) Xspread of the SARS epidemic in the world using the formation of
phylogenetic trees using the maximum likelihood method. The
& t6 l% ~( I1 T+ n3 m( V3 X7 Goutput obtained was a description of the spread of SARS virus
& k, ^& \" g3 [& Awith the selection of tree candidates after performing a heuristic
search of the Stepwise Addition method. The result of the research
6 I2 F; M6 J8 }4 }showed that the closest distance to the palm civet is GZ 02/18/03
. ^$ b5 N7 q" C8 K' s" Vindicating that the initial spread of the SARS epidemic started
from Guangzhou.


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