Identifying Hosts of Families of Viruses: A Machine Learning Approach

Details Identifying Hosts of Families of Viruses: A Machine Learning Approach Identifying Hosts of Families of Viruses: A Machine Learning Approach

2011-05-29

arxiv.org/abs/1105.5821v1

Biology

Quantitative Biology

Quantitative Methods

11 pages, 7 figures, 1 table

Scientific paper

Identifying viral pathogens and characterizing their transmission is essential to developing effective public health measures in response to a pandemic. Phylogenetics, though currently the most popular tool used to characterize the likely host of a virus, can be ambiguous when studying species very distant to known species and when there is very little reliable sequence information available in the early stages of the pandemic. Motivated by an existing framework for representing biological sequence information, we learn sparse, tree-structured models, built from decision rules based on subsequences, to predict viral hosts from protein sequence data using popular discriminative machine learning tools. Furthermore, the predictive motifs robustly selected by the learning algorithm are found to show strong host-specificity and occur in highly conserved regions of the viral proteome.

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