some applications of mathematics in the news, art, science, business, and elsewhere...

some applications of mathematics in the news, art, science, business, and elsewhere...

Tuesday, November 30, 2010

Math knows who and what you love

If you go to the website OKCupid you will see that it self identifies as the 'best dating site on Earth' and this is probably an indication of what online dating is like: a little self promotion never hurt anyone. Right?

Another tagline that they use: 'we do the math to get you dates'

The site matches its users by the use of online quizzes which makes it different than the online dating sites that I've seen. The data collected by this site is probably quite interesting to read. A blogger for the site by the name of Christian Rudder is identified as a guitarist and a math guy in an interview on NPR. If you look at his Wikipedia page he is labeled as American musician, humorist, and entrepreneur.

This story was about the analysis that Christian Rudder (and his team) did on the data available through OKCupid. Admittedly it was just for fun, but I bet this data would be of interest to marketers. They first tried to identify the likes of groups that one would normally try to stereotype. They didn't find anything interesting because these lists looked very similar independent of what group one was looking at. But then they tried something interesting and learned a good mathematical definition of what a stereotype is: a 'like' that a group has that is not common to the whole population.

What did they find? From the NPR article:

For example, top interests for white men included Tom Clancy, Van Halen, golfing and Harley Davidson. Top interests for black women were soul food, The Color Purple, gospel and Alicia Keys.

I know that this sounds kind of sad, but really it is identifying what we call a stereotype and why.

The most recent posting to the OKCupid blog was about statistics about gay and straight sterotypes and other statistics from data which seems to involve a lot of really good sociology research.

Saturday, November 20, 2010

Running and Food, calculation of calories

A graduate student in the MD/PhD program of Harvard/MIT division of health, Benjamin Rapoport, realized that the phenomenon of 'hitting the wall' while running a marathon was an effect of a body not storing enough carbs. He decided to create a mathematical model to try to determine a formula for the carbohydrates that someone should store before running a marathon. There have been several reports in the news lately of this very useful application of mathematics. It seems as though Benjamin was inspired by his love of running marathons (he has run 18) and his background in the health sciences and mathematics.

His model allowed a group to build an 'endurance calculator' to determine safe running speeds over long distances.

NPR,
New Scientist
Outlook Series.