neural networking

February 8, 2024 · 0 min

neurally networked

February 6, 2024 · 0 min

Edward Tufte - The Future of Data Analysis

Edward Tufte gave a keynote at Microsoft's Machine Learning and Data Science Summit back in September. He talks about data complexity, and the dangers of overfitting results to models.

November 14, 2016 · 1 min

thesis visualization

using textexture.com, thanks to a tip from Bryan Alexander. Doesn't mean a whole lot at first glance, but it sure is purty. This is chapters 4 and 5 of my thesis (textexture choked on the whole thing): (click to embiggen)

November 9, 2012 · 1 min

fun with bike data visualization

I just picked up a license for the fantastic OmniGraphSketcher application. I'm using it to build the visualizations for my thesis, and wanted to see what it would do with my bike tracking data. OK. I was procrastinating, and couldn't force myself to work on the thesis. But, at least I'm learning how to do more cool stuff with data, right? cough Anyway. Here's a visualization of almost 2 and a half years of data stored in Cyclemeter on my iPhone....

August 18, 2012 · 1 min

discussion visualization with gephi

I've been playing around with gephi today, to see what I could come up with to display the discussion threads from my research data. Lots of manual data entry later, and I've got this: and this: WordPress sites are shown in red, Blackboard discussion forums in blue. So far, just a pretty picture, but I'll hopefully be able to coax out a diagram or two that shows the difference in interaction patterns between the two platforms....

April 3, 2012 · 1 min

discussion network visualization

I just put together some quick network maps for the online discussions from my thesis research data. Haven't done any analysis - just some purty pictures to see any at-a-glance differences: Both discussion platforms had about the same number of posts and responses, but the pattern of connections is markedly different for some reason...

March 28, 2012 · 1 min

aggregated metadata for online discussions

here's a quick look at the aggregated metadata for all of the online discussions I'm using in my thesis: About the same number of posts in each platform, with a bit more of a time-spread in the WordPress discussions, substantially longer posts in WordPress, about the same (non) use of images, more links in WordPress posts, and more attachments in Blackboard posts.

March 24, 2012 · 1 min

basic metadata analysis

Here's a quick pass at analyzing the basic metadata for the online discussions. I plotted a few calculated values (Excel pivot tables fracking ROCK, BTW...), to try to compare activity patterns. What's interesting in this graph is the average wordcount (green line) - low for the Blackboard discussion board threads (the left 5 items) and markedly higher for the 8 student blog (the right 8 items). The number of posts in each discussion (dark blue line) is relatively consistent across all discussions....

March 23, 2012 · 2 min

full online discussion metadata visualization

I've finally entered all of the metadata information for the online discussions I'm using in my thesis. This includes the person who posts something, the date, and the size of the post. I worked through my earlier visualization mockup, and wanted to try it with the full set of data. So, here's the Blackboard discussions (top image) and WordPress blog posts (bottom image): It's only the most basic of metadata, but already differences in activity patterns are becoming apparent....

March 23, 2012 · 1 min