Articles by John Ramey

MLB Rankings Using the Bradley-Terry Model

August 31, 2013 | John Ramey

Today, I take my first shots at ranking Major League Baseball (MLB) teams. I see my efforts at prediction and ranking an ongoing process so that my models improve, the data I incorporate are more meaningful, and ultimately my predictions are largely accurate. For the first attempt, let’s rank ... [Read more...]

A Brief Look at Mixture Discriminant Analysis

July 2, 2013 | John Ramey

Lately, I have been working with finite mixture models for my postdoctoral work on data-driven automated gating. Given that I had barely scratched the surface with mixture models in the classroom, I am becoming increasingly comfortable with them. With this in mind, I wanted to explore their application to classification ... [Read more...]

Setting Up the Development Version of R

August 28, 2012 | John Ramey

My coworkers at Fred Hutchinson regularly use the development version of R (i.e., R-devel) and have urged me to do the same. This post details how I have set up the development version of R on our Linux server, which I use remotely because it is much faster than ... [Read more...]

Now That We Live in Seattle

August 11, 2012 | John Ramey

It has been just a few weeks since my wife, my son, and I moved to Seattle so that I could begin my postdoc at The Hutch. Now that we have been here a short time and are settled, we intend to start exploring Seattle, doing typical touristy things as ... [Read more...]

And Now I Blog Again

August 4, 2012 | John Ramey

One of my goals for 2012 has been to blog more. Much more. When I first set this goal, I had great aspirations of posting frequently. However, I had a Ph.D. to complete, and quite frankly, it demanded much higher priority. Now that I have submitted my ... [Read more...]

Goals for 2012

January 9, 2012 | John Ramey

I have never been one to set New Year’s resolutions. Personally, they instill a dangerous personal freedom that often yield naive, subconscious mentalities, such as I can do anything I want until December 31, and I will change abruptly the next day. ... [Read more...]

When I was 29…

January 8, 2012 | John Ramey

Today was my 29th birthday, and I kept things simple: I ate with my wife and my newborn son at a local eatery. Later, my wife cooked steaks for dinner. For the most part, I took the day off in that I did not work on my dissertation. But I ... [Read more...]

Pseudo-Random vs. Random Numbers in R

November 25, 2011 | John Ramey

Earlier, I found an interesting post from Bo Allen on pseudo-random vs random numbers, where the author uses a simple bitmap (heat map) to show that the rand function in PHP has a systematic pattern and compares these to truly random numbers obtained from The post’s results ... [Read more...]

Getting Started with Some Baseball Data

May 24, 2011 | John Ramey

With all of the discussions (hype?) regarding applied statistics, machine learning, and data science, I have been looking for a go-to source of data unrelated to my day-to-day work. I loved baseball as a kid. I love baseball now. I love baseball stats.... [Read more...]

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