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

杨利霞

Maximum Likelihood Method on The Construction of

/ d+ H8 |/ I: H  y3 X& r- V, q; _

Phylogenetic Tree for Identification the Spreading of

! a; S0 E) J# C4 L/ Z3 _; q

SARS Epidemic

/ U* W( _' X. p0 |+ G
* K  Q8 i0 x0 b5 h
There are several phylogenetic tree construction
methods that can be used to illustrate the spread of disease
. b/ x( I2 S+ A. ^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
* g/ B+ `, B9 Xphylogenetic trees using the maximum likelihood method. The
+ _2 o# `& A" routput obtained was a description of the spread of SARS virus
+ y4 x  H( q  b# W# |4 z9 zwith the selection of tree candidates after performing a heuristic
search of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
$ T3 m+ x! J' W3 A5 p; [1 Iindicating that the initial spread of the SARS epidemic started
from Guangzhou.
% h8 Q# m8 |2 I: H# r: L* p