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

! a) v$ F; K  K& n9 ]

SARS Epidemic

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% \" D: e# d# Y: X- G% `There are several phylogenetic tree construction
! S( F; P, B  r$ y" [methods that can be used to illustrate the spread of disease
epidemics. One of the methods used is probability-based
maximum likelihood. This paper explains how to identify the
, a8 @0 V  [0 P, U& S) Yspread of the SARS epidemic in the world using the formation of
phylogenetic trees using the maximum likelihood method. The
9 t4 S+ u: \+ Koutput obtained was a description of the spread of SARS virus
8 l' u* m0 ?9 n. \1 L  T/ s  Bwith the selection of tree candidates after performing a heuristic
search of the Stepwise Addition method. The result of the research
. \8 J1 [. ^* B  Hshowed that the closest distance to the palm civet is GZ 02/18/03
2 G0 U' V( p$ Sindicating that the initial spread of the SARS epidemic started
: ^1 [6 H& \: @* h& S9 Yfrom Guangzhou.