So by now it's around the web, though less accurately reported some places than others, that Stanford and edX have reached an agreement whereby the Stanford team-formerly-known-as-Class2Go will adopt the edX platform, becoming core contributors on it, and edX will finally (after long promising to) open source their platform under the AGPL. Formal ( Read more... )

Following up on a conversation with Luke Closs, I started thinking about measuring Wiki health out in the part of the world that doesn't keep track of RecentChanges. He pointed out that even in the RecentChanges world, as Wiki use becomes heavier and people integrate them more into their routines, RecentChanges use tends to drop off. People who ( Read more... )

Shortly after getting the principal component analysis of my sample data set working, I also got k-means clustering working. As far as I can tell, the cluster quality looks pretty good.

Sample code is up on GitHub: jrbl/wikilyticsTo use it, you'll want a dump of the descriptive statistics for two or more wikis in a CSV format. For the 2098 wikis ( Read more... )

A very hasty note to share some of what I've been up to - then, to bed.

So a while ago Eugene Kim included me in an ongoing conversation he's been having with lots of people, about what it means for a Wiki to be "healthy". He thought that I might be interested in bringing a statistical/numerical/machine learning approach to the problem. This ( Read more... )

Subject: LinkedIn networks have limited utility because their size increases monotonically
Date: 09/21/2008 12:01 AM

( So I sent them this email. )