Jonathan's Research Page

My ugly mug
Yes, that's me all right.

Welcome to my (academic) home on the World Wide Web. I graduated from Washington State University in 2001, and am currently a graduate student working in the Graphics and Visualization department at the University of California, Davis. My advisor is Kwan-Liu Ma. Here's my contact information:

Research Projects

Here are some of the projects I'm currently working on, or have worked on in the past.

Large Network Visualization

This project is concerned with the visualization of very large graphs and networks. How much information can we display on a device at once without overwhelming the user's abilities to process the information? How can we abstract the information without hiding patterns in the data that the user is looking for and without creating patterns that did not exist in the original data? What kinds of techniques can be used to explore such large data spaces?
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Semantic Network Visualization

This project is concerned with the visualization of semantic graphs. By semantic we are referring to a graph whose nodes and edges represent concepts and the the relationships between those concepts, respectively. How can we display these graphs in a meaningful way? What kinds of information can we present to the user, and what kinds of information can we help the user deduce?
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ML-Based Text Classification

This project is concerned with the classification of text using the Naive Bayes classifier, which uses machine learning to discover the difference among a set of classes of text and attempt to classify new text into existing categories. Our approach challenges some of the naive Bayes assumptions and shows how classification can be improved in some settings. (This unpublished paper was originally written for a machine learning class and has little relationship to my primary research!)
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