February 2012
2 posts
3 tags
3 Things Metro Could Do (for free) To Make it Less...
The Washington DC area metrorail system is probably the cleanest public transportation system in the US. That’s about as far as I can go on complimenting it.
Metro is horribly run. Trains don’t run on a schedule, the staff is rude and sometimes threaten passengers with violence, there is no way to report incidents that occur on the trains, and the metro police don’t seem to...
2 tags
Principal Components Analysis Just Blew My Mind
I like to think of myself as a pretty data-savvy individual. I’m a 3-star black belt in spreadsheet jujitsu and I’m becoming more and more of a SAS-hole, but it turns out that there was a huge hole in my game.
Principal Components
I had heard the term “principal components” before, probably while reading a paper about some super-sexy analysis that someone else did, but...