Faculty of Engineering, LTH

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PhD dissertation by Dennis Medved: Deep Learning Applications for Biomedical Data and Natural Language Processing


From: 2018-09-17 13:00
Place: Lecture hall E:1406, building E, Ole Römers väg 7, Lund University, Faculty of Engineering LTH, Lund
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Thesis for download (PDF)


The human brain can be seen as an ensemble of interconnected neurons, more or less specialized to solve different cognitive and motor tasks. In computer science, the term deep learning is often applied to signify sets of interconnected nodes, where deep means that they have several computational layers. Development of deep learning is essentially a quest to mimic how the human brain, at least partially, operates.

In this thesis, I will use machine learning techniques to tackle two different domain of problems. The first is a problem in natural language processing. We improved classification of relations within images, using text associated with the pictures. The second domain is regarding heart transplant. We created models for pre- and post-transplant survival and simulated a whole transplantation queue, to be able to asses the impact of different allocation policies. We used deep learning models to solve these problems.

As introduction to these problems, I will present the basic concepts of machine learning, how to represent data, how to evaluate prediction results, and how to create different models to predict values from data. Following that, I will also introduce the field of heart transplant and some information about simulation.
Opponent: Professor Paulo Lisboa, John Moores University, Liverpool
Examining committee:
Professor Rebecka Jörnsten, Mathematical Sciences, Chalmers
Professor/Chief Physician Lars Edenbrandt, Department of Molecular and Clinical Medicine, SU Sahlgrenska
Docent Fredrik Heintz, Department of Computer and Information Science, Linköping University
Substitute: Professor Boris Magnusson
Chair: Professor Krzysztof Kuchcinski