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Using Machine Learning to Distinguish Infected from Non-infected Subjects at an Early Stage Based on Viral Inoculation

  • Ghanshyam VermaEmail author
  • Alokkumar Jha
  • Dietrich Rebholz-Schuhmann
  • Michael G. Madden
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11371)

Abstract

Gene expression profiles help to capture the functional state in the body and to determine dysfunctional conditions in individuals. In principle, respiratory and other viral infections can be judged from blood samples; however, it has not yet been determined which genetic expression levels are predictive, in particular for the early transition states of the disease onset. For these reasons, we analyse the expression levels of infected and non-infected individuals to determine genes (potential biomarkers) which are active during the progression of the disease. We use machine learning (ML) classification algorithms to determine the state of respiratory viral infections in humans exploiting time-dependent gene expression measurements; the study comprises four respiratory viruses (H1N1, H3N2, RSV, and HRV), seven distinct clinical studies and 104 healthy test candidates involved overall. From the overall set of 12,023 genes, we identified the 10 top-ranked genes which proved to be most discriminatory with regards to prediction of the infection state. Our two models focus on the time stamp nearest to \(t = 48\) hours and nearest to \(t =\)Onset Time” denoting the symptom onset (at different time points) according to the candidate’s specific immune system response to the viral infection. We evaluated algorithms including k-Nearest Neighbour (k-NN), Random Forest, linear Support Vector Machine (SVM), and SVM with radial basis function (RBF) kernel, in order to classify whether the gene expression sample collected at early time point t is infected or not infected. The “Onset Time” appears to play a vital role in prediction and identification of ten most discriminatory genes.

Keywords

Machine learning Respiratory viral infection Prediction Deferentially expressed genes 

Notes

Acknowledgements

This publication has emanated from research conducted with the financial support of Science Foundation Ireland (SFI) under Grant Number SFI/12/RC/2289, co-funded by the European Regional Development Fund.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Insight Centre for Data AnalyticsNational University of Ireland GalwayGalwayIreland
  2. 2.School of Computer ScienceNational University of Ireland GalwayGalwayIreland
  3. 3.ZB MED - Information Center for Life SciencesUniversity of CologneCologneGermany

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