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

杨利霞

Maximum Likelihood Method on The Construction of

  G: G- J" h' k

Phylogenetic Tree for Identification the Spreading of

SARS Epidemic

' |; {/ `6 t/ s5 O# a

There are several phylogenetic tree construction
methods that can be used to illustrate the spread of disease
, M$ j; E$ L! E6 ^epidemics. One of the methods used is probability-based
1 Z/ e' v9 {: T+ e' J+ [" M1 hmaximum likelihood. This paper explains how to identify the
5 y) p4 q. Q* a! y$ ~) kspread of the SARS epidemic in the world using the formation of
$ E2 L4 g4 ?3 W& {" b& Uphylogenetic trees using the maximum likelihood method. The
output obtained was a description of the spread of SARS virus
1 |& O  ?+ v, @6 {7 R2 j, jwith the selection of tree candidates after performing a heuristic
search of the Stepwise Addition method. The result of the research
1 l1 _$ I8 m2 o5 Wshowed that the closest distance to the palm civet is GZ 02/18/03
" Z  x; Z# |# V, j& Pindicating that the initial spread of the SARS epidemic started
# }/ }4 f3 u; G: n6 x- f* Cfrom Guangzhou.
  j- K/ r' a! K. R( p5 L

9 S& C1 i7 ]+ [, |5 t7 z* P