HNHacker News
TopNewBestAskShowJobs

kohlmeier

168 karma · joined February 18, 2012

https://twitter.com/derandomized
submissionscomments
kohlmeier··on Show HN: Memfinity.org – Social, spaced-repetition web service
I'm a bit ambivalent about that feature. I do think many folks will want/expect it, and it would be useful at times. At the same time, the primary use of the app I personally wanted is to add things I wanted to remember permanently, and let the algorithms handle all of the work of scheduling optimal practice. Gonna think about this.
kohlmeier··on Show HN: Memfinity.org – Social, spaced-repetition web service
Thanks for the feedback.

Bulk import would be a pretty fast and simple add; I'll make a GitHub issue for it.

kohlmeier··on Show HN: Memfinity.org – Social, spaced-repetition web service
Not currently, though that would be quite cool. For now, I clarified my version of that card, which unfortunately had a typo. Thanks..
kohlmeier··on Bayes nets by example with Python and Khan Academy data
This is not naive bayes and does not assume independent observations on the exercises. The point of using a network is to model the joint distribution with dependencies.
kohlmeier··on Bayes nets by example with Python and Khan Academy data
The 'E' in the regression is the inferred/predicted value of the E variable for that exercise, using no problem history from that exercise--only what's pulled in through the Bayes net. (Sorry that wasn't clear)

The 'T' variable is likely just a case of multicollinearity with the 'E' variable and should go away on a full-scale data set. If not it can easily be removed from the model. The 'E' variable is dominating because is additionally captures cross-sectional affects across the various exercises in the regression.