I have a little delinquent on this whole blogging thing but here is a talk I gave to the DC R Group. On a twisted and Rpy2 web application framework that I built for my company. Enjoy http://bit.ly/NW0Neg J
Blog Archives
Long running R commands: unix screen, nohup and R
I wanted to write a quick post about a useful linux tool for using R. I sometimes have long running R sessions for model training. One solution that I have alluded to is to call your script with Rscript. The nohup command in linux with push this to the...
Lehmann Primiality Test in R
After a small frustration with the limitations of R 16-bit intergers. I think i have worked out a solution. The issue was i was implementing a bone-headed solution to the modulo/exponent step. So to recap. The Lehmann primality test is a probabilistic ...
I may have ventured into the first circle and Virgil Is NOT Here — Lehmann Primality Test in R
So a post about Lehmann Primality Tests in HackerNews came across my twitter this morning. Seemed like a great quick coding exercise during lunch. Little Did I know…It is wonderfully simple primality test but i think i have hit up against some R quir...
Poor, Poor Hillary
This will be the last baby name related post but this came out of part two web scrapping post last month. I was looking for the fastest rising Names. I flip the logic and looked for the fastest declining names in relative popularity. Out of that exerci...
SVN Version Control, R, and some rambling thought on AWS,Rscripts
I do a alot of my modelling on Rstudio hosted on EC2 instances. If you don’t use, I would highly recommend. A brilliant tool. Kudos to the Rstudio team. I have made a personal and professional pledge to obsessively use version control. I hope to show...
Ulam Spirals in R and ggplot
Having seen a twitter post speed by about Ulam Spirals I started to read up. As the story goes in 1963 Stanislaw Ulam was bored at conference and started scribbling numbers in a spiral. What he discovered was a strange diaginal pattern of Prime Nu...
Popular Baby Names Walk-Through Part 2 – Graphing the fast movers
I will assume you have read through part 1 and have the csv file loaded. While we covered some basic graphing in the last post i hope to get into a little more of the data crunching. Specifically I am interested in the names which where driven by a spe...
Popular Baby Names Walk-Through Part 1 – Web Scrapping and ggploting
This is the first walk-through I have posted. Reading these types of posts has been incredibly helpful as I have been learning R and other useful tools in the Unix universe. Hopefully you find it helpful. First, I have been watching Google Python Video...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
