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Scripta Scientifica Medica

Network-constrained regularization in computational biology and medicine

Sivo Daskalov, Kristina Bliznakova

Abstract

Introduction: Computational biology, diagnostic modalities, clinical patient results often involve working with high-dimensional data (p >> n). Penalized regression methods are often used on such data, as they can perform feature selection effectively. In particular, network penalized approaches also allow to model relationships between predictors, as often occurs when analyzing omics data. Unfortunately, the wide variety of such methods in literature leads to difficulty in choosing the most suitable one for a given dataset.

Aim: This paper focuses on a variety of regression methods and potential applications in computational biology and medical research.

Materials and Methods: The following basic regression methods are briefly discussed: Ridge, Lasso, Elastic Net, and Grace. Their application in solving problems in medical research as well as in everyday practice of the Modelling and Simulation research group at Medical University of Varna is demonstrated.

Results and Conclusion: Regression methods were successfully used to define the characteristics of the available materials with 3D printing technologies. Based on these, novel physical models were manufactured and for x-ray imaging research use. Application of network-based regularization method was reviewed to be suitable for defining the relation between patient’s genotype and drug response.


Keywords

penalized regression, network-constrained regularization, x-ray physical imaging models, computational biology

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DOI: http://dx.doi.org/10.14748/ssm.v0i0.7762
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About The Authors

Sivo Daskalov
Technical University of Varna
Bulgaria

Department of Software and Internet Technologies, Faculty of Computer Sciences and Automation

Kristina Bliznakova
Medical University of Varna
Bulgaria

Department of Medical Equipment, Electronic and Information Technologies in Healthcare, Faculty of  Public Health

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