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

! l8 l( Q0 ~. K  W- r8 D6 S

SARS Epidemic

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5 V0 J" H2 r3 J! \6 f" R" qThere are several phylogenetic tree construction
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
$ z1 C# H5 z5 n3 G0 Nspread 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
  \9 W7 V# N/ awith the selection of tree candidates after performing a heuristic
0 n1 v/ i7 V" Isearch of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
indicating that the initial spread of the SARS epidemic started
from Guangzhou.