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Yep, this is a really bad way to present the information. Having a collapsible columnar list for each department would be orders of magnitude more useful. Plus it would be in HTML, and you could use ctrl/cmd+f to search for dissertations by keyword.

Perfect example of bad data viz.

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Yes and no. I found quite useful and visual the way to show the relationship between topics. For example, you can see the close relationship between biology and psychology. I'm not sure a large table could the job.

I see almost no correlation between bio and psych. In fact, I only see 2 articles that link those 2 topics at all.

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