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Machine Learning Methods for Graph-Structured Data

12 Aug
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Wednesday, 08/12/2020 1:00pm to 3:00pm
Zoom Meeting
PhD Thesis Defense
Speaker: Stefan Dernbach
Zoom Meeting:  https://umass-amherst.zoom.us/j/97395159041?pwd=ZlI5aGtnTFVLS2tJZFU0eWhjaUFoQT09   Abstract:

The information age has led to an explosion is the size and availability of data. This data often exhibits structure that is either explicitly defined, as in the web of a social network, or is implicit and can be determined by measuring similarity between objects. Utilizing this graph-structure allows for designing machine learning algorithms which reflect not only the attributes of individual objects but their relationship to the objects in rest of the domain as well.

This thesis investigates three machine learning problems and proposes novel methods that leverage the graph-structure inherent in the tasks. Quantum walk neural networks are a classical neural net that use quantum random walks for classifying and regressing on graphs. Asymmetric directed node embeddings are another neural network architecture designed to embed the nodes of a directed graph into a vector space. Filtered manifold alignment is a novel two-step approach to domain adaptation.

Advisor: Don Towsley