July 2014

An ISO Standard for R (just kidding)

July 24, 2014 | Derek Jones

IST/5, the British Standards’ committee responsible for programming languages in the UK, has a new(ish) committee secretary and like all people in a new role wants to see a vision of the future; IST/5 members have been emailed asking us what we see happening in the programming language standards’ ... [Read more...]

Agent Based Models and RNetLogo

July 24, 2014 | Joseph Rickert

by Joseph Rickert If I had to pick just one application to be the “killer app” for the digital computer I would probably choose Agent Based Modeling (ABM). Imagine creating a world populated with hundreds, or even thousands of agents, interacting with each other and with the environment according to ... [Read more...]

The maths of Texas Hold ’em with R

July 24, 2014 | Mic

Please before continue reading, make sure to read the disclaimer at the bottom of this article. Every time I watch on tv some game of Texas Hold’em I am always curious about the small percentages which appear in the bottom corners of the screen and tell us the chances ... [Read more...]

Six of One (Plot), Half-Dozen of the Other

July 24, 2014 | guest

This is a guest post by Randy Zwitch (@randyzwitch), a digital analytics and predictive modeling consultant in the Greater Philadelphia area. Randy blogs regularly about Data Science and related technologies at http://randyzwitch.com. He’s blogged at Bad Hessian before here. For those of you with WordPress blogs and ... [Read more...]

What shall we talk about at ESA?

July 24, 2014 | Noam Ross

ESA is just around the corner, and many of us are gearing up and trying to figure out a schedule to cover all the talks and people we can pack in. ESA is a big conference and there’s far too much for any one person to see. In the ... [Read more...]

再不相信预编译的R

July 23, 2014 | R on Guangchuang Yu

去年ubuntu下apt-get了R-3.0.2, 用了没多久就发现了system命令有问题,通常情况下调用系统命令是正常的,但是我调用bowtie的时候,就会报错: Warning: Could not open read file "/tmp/8156.inpipe1" for reading; skipping... Read More: 2553 Words Totally [Read more...]

Left-handed catchers

July 23, 2014 | Martin Monkman

Benny Distefano – 1985 Donruss #166 (source: baseball-almanac.com) We are approaching the twenty-fifth anniversary of the last time a left-handed throwing catcher appeared behind the plate in a Major League Baseball game; on August 18, 1989 Benny Distefano made his third and final appearance as a catcher for the Pirates. Distefano’s accomplishment was ... [Read more...]

Coherent population forecasting using R

July 23, 2014 | Rob J Hyndman

This is an example of how to use the demography package in R for stochastic population forecasting with coherent components. It is based on the papers by Hyndman and Booth (IJF 2008) and Hyndman, Booth and Yasmeen (Demography 2013). I will use Australian data from 1950 to 2009 and forecast the next 50 years. In ... [Read more...]

> plot( polyroot(choose(131,14:29)) ,pch=19,col=’red’) >…

July 23, 2014 | Isomorphismes

29 39 59 79 99 119 "139"__ plot( polyroot(choose(131,14:29)) ,pch=19,col='red') __ plot( polyroot(choose(131,14:39)) ,pch=19,col='red') __ plot( polyroot(choose(131,14:59)) ,pch=19,col='red') __ plot( polyroot(choose(131,14:79)) ,pch=19,col='red') __ plot( polyroot(choose(131,14:99)) ,pch=19,col='red') __ plot( polyroot(choose(131,14:119)) ,pch=19,col='red') __ plot( polyroot(choose(131,14:139)) ,pch=19,col='red') [Read more...]

magrittr: Simplifying R code with pipes

July 23, 2014 | David Smith

R is a functional language, which means that your code often contains a lot of ( parentheses ). And complex code often means nesting those parentheses together, which make code hard to read and understand. But there's a very handy R package — magrittr, by Stefan Milton Bache — which lets you transform nested ... [Read more...]

Mideast Graph 3: Slate Middle East Friendship

July 23, 2014 | Sam Weiss

Slate recently published a great info-graphic about Middle-East Relationships. It shows the relationships (Friend, Enemy, or Complicated) of 13 countries / organizations and the relationships between each pair. One draw back of the chart is that it doe... [Read more...]

Simulate data with R

July 23, 2014 | Mic

Last semester I was attending a boring class, even though the professor was really clever, he was always bouncing around the main theme and never got straight to the point. While thinking about everything but the class, I had an idea: when you are give... [Read more...]

Advanced R Profiling with pbdPAPI

July 22, 2014 | wrathematics

R has some extremely useful utilities for profiling, such as system.time(), Rprof(), the often overlooked tracemem(), and the rbenchmark package. But if you want more than just simple timings of code execution, you will mostly have to look elsewhere. One of the best sources for profiling data is hardware ... [Read more...]
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