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

杨利霞

Maximum Likelihood Method on The Construction of

. y- t% R1 Q$ t1 f

Phylogenetic Tree for Identification the Spreading of

7 Q2 U' N7 W2 u  y/ j* s

SARS Epidemic

  `6 O. C- R$ e4 [There are several phylogenetic tree construction
methods that can be used to illustrate the spread of disease
8 T% F/ r) S. T. A  I3 v# _epidemics. One of the methods used is probability-based
maximum likelihood. This paper explains how to identify the
spread of the SARS epidemic in the world using the formation of
phylogenetic trees using the maximum likelihood method. The
output obtained was a description of the spread of SARS virus
: e' c% m+ _5 D; qwith the selection of tree candidates after performing a heuristic
( q$ [2 m* s$ }9 f4 M& wsearch of the Stepwise Addition method. The result of the research
8 z* B$ R/ D6 cshowed that the closest distance to the palm civet is GZ 02/18/03
7 J# n5 z1 U! s$ [indicating that the initial spread of the SARS epidemic started
6 |6 }- O8 m* _' j! o- z2 [4 efrom Guangzhou.
. @  C2 Y$ [0 V' U
1 M4 \8 n7 I4 W. {
; ~# G  S" n( d0 ~5 w