This test is the first attempt to seriously assess the ability of individuals to survive a zombie apocalypse. This test is administered using the R powered open-source testing platform Concerto developed at the University of Cambridge. The t...
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Stashing and playing with raw data locally from the web
It is getting easier to get data directly into R from the web. Often R packages that retrieve data from the web return useful R data structures to users like a data.frame. This is a good thing of course to make things user friendly.
However, what if you want to drill down into the data that's returned from a query...
analyze the pesquisa de orcamentos familiares (pof) with r
for the unlucky among us born without a portuguese mother tongue, the pesquisa de orcamentos familiares (pof) translates to survey of household budgets. this data set captures brazilian family consumption habits, allocation of expenses, and incom...
Scenario analysis and trading options using R
I present you with my restructured project on options trading and scenario analysis. You are more than welcome to try it out. Firstly, I will give a small presentation that will reveal what you can do with it and whether you need to continue reading. T...
The scaling of Expected Shortfall
Getting Expected Shortfall given the standard deviation or Value at Risk. Previously There have been a few posts about Value at Risk and Expected Shortfall. Properties of the stable distribution were discussed. Scaling One way of thinking of Expected Shortfall is that it is just some number times the standard deviation, or some other number … Continue reading...
Distribution of car weights
Two weeks ago I described car data, among which weight distribution of cars in Netherlands. At that time it was purely plots. In the mean time I decided I wanted to model trends. As a first step of that, I decided to fit distributions for these da...
Simulating Map-Reduce in R for Big Data Analysis Using Flights Data
At datadolph.in, we are constantly crunching through large amounts of data. We are designing unique and innovative ways to process large datasets on a single node and use distributed computing only when single node computing become...
Sudoku Automation Solver Challenge – R
On a recent flight I was bored waiting for the plane to land and I tried out the electronic sudoku game that they had offered. I found the game surprisingly interesting as I realized that it is far more entertaining when you cannot use paper or p...
Interval Estimation of the Population Mean
Interval estimation of the population mean can be computed from the functions of the following R packages:stats - contains the t.testTeachingDemos - contains the z.testBSDA - contains the zsum.test and tsum.testThe t.test of the stats package is a stud...
Top 100 R packages for 2013 (Jan-May)!
(This article was first published on R-statistics blog » RR-statistics blog, and kindly contributed to R-bloggers) What are the top 100 (most downloaded) R packages in 2013? Thanks to the recent release of RStudio of their “0-cloud” CRAN log files (but without including downloads from the primary CRAN mirror or any of the 88 other CRAN mirrors), we can now answer this question...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
