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

杨利霞

Maximum Likelihood Method on The Construction of

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Phylogenetic Tree for Identification the Spreading of

SARS Epidemic

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! |4 E* |& b9 }There are several phylogenetic tree construction
! f/ i; A4 J6 S  l, R+ w# [1 }: nmethods 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
/ X5 K4 F, Z! x  U; r8 {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
with the selection of tree candidates after performing a heuristic
4 T% H  L) Z. D( rsearch of the Stepwise Addition method. The result of the research
showed that the closest distance to the palm civet is GZ 02/18/03
# _1 Z: \2 k" B4 I' gindicating that the initial spread of the SARS epidemic started
1 j  B+ p: N, `0 [8 w2 d# Ffrom Guangzhou.

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