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

There are several phylogenetic tree construction
- m4 _5 U, z* l- _% omethods that can be used to illustrate the spread of disease
epidemics. One of the methods used is probability-based
6 o$ M# M, u' {5 {6 ?& y8 ~- g+ kmaximum likelihood. This paper explains how to identify the
spread of the SARS epidemic in the world using the formation of
5 E) T5 j+ a5 t& S8 Nphylogenetic trees using the maximum likelihood method. The
1 Z' M0 h9 R8 J4 w$ d: V: o+ Houtput obtained was a description of the spread of SARS virus
8 ~. ?; i* O9 ?5 b  e2 swith the selection of tree candidates after performing a heuristic
0 `+ z$ n4 o9 A7 _8 W; W6 zsearch of the Stepwise Addition method. The result of the research
1 O2 l) ~; a0 O+ l; ushowed that the closest distance to the palm civet is GZ 02/18/03
% ~& D6 Q' U; hindicating that the initial spread of the SARS epidemic started
' k) K) v9 D0 x; Kfrom Guangzhou.
$ M' f6 q" K. K, S

2 O% J9 \) o. E# a