January 2015

Book Review: R for Business Analytics

January 28, 2015 | andrew

The book R for Business Analytics by Ajay Ohri sets out to look at "some of the most common tasks performed by business analysts and helps the user navigate the wealth of information in R and its 4000 packages." In my opinion it succeeds in covering an extensive range of topics ... [Read more...]

rClr 0.7-3 released

January 27, 2015 | Jean-Michel Perraud

Version 0.7-3 of rClr (source code also on GitHub), a package to access arbitrary .NET code seamlessly in-process, has just been released. The package was first introduced a year and a half ago in another blog post, and you can skim through that prior ... [Read more...]

Google Analytics Dashboards with R & Shiny

January 27, 2015 | Marco Pasin

One of the key activities of any web or digital analyst is to design and create dashboards. The main objective of a web analytics dashboard is to display the current status of your key web metrics and arrange them on a single view, so that information ... [Read more...]

Assessing mapdata world coastline

January 27, 2015 | Dan Kelley Blog/R

Introduction The mapdata R package contains a coastline called worldHires which is contained within a text file with a bit over 2 million lines. Since the coastlineWorldFine dataset in the ocedata package contains about 0.5 million points, I thought I would explore how much better the mapdata coastline might be. Methods First, ... [Read more...]

Check your return types when modeling in R

January 27, 2015 | John Mount

Just a warning: double check your return types in R, especially when using different modeling packages. We consider ourselves pretty familiar with R. We have years of experience, many other programming languages to compare R to, and we have taken Hadley Wickham’s Master R Developer Workshop (highly recommended). We ... [Read more...]

Parallel Programming with GPUs and R

January 27, 2015 | Joseph Rickert

by Norman Matloff You've heard that graphics processing units — GPUs — can bring big increases in computational speed. While GPUs cannot speed up work in every application, the fact is that in many cases it can indeed provide very rapid computation. In this tutorial, we'll see how this is done, both ... [Read more...]

googleVis version 0.5.8 released

January 27, 2015 | Markus Gesmann

We released googleVis version 0.5.8 on CRAN last week. The update is a maintenance release for the forthcoming release of R 3.2.0. Screen shot of some of the Google ChartsNew to googleVis? The package provides an interface between R and the Google Char... [Read more...]

Why you should learn R first for data science

January 26, 2015 | Sharp Sight Labs

Over and over, when talking with people who are starting to learn data science, there’s a frustration that comes up: I don’t know which programming language to start with.” And it’s not just programming languages, it’s also software systems like Tableau, SPSS, etc. There is an ... [Read more...]

RWE npower Forecasting Challenge

January 26, 2015 | Dominykas Grigonis

Lately I have been involved in organising forecasting competition for undergraduate students. The obvious goal is to find someone with forecasting power who would potentially be interested in internship or graduate scheme. Recently, I asked a few people from quant and forecasting teams to try the task out in order ... [Read more...]

the density that did not exist…

January 26, 2015 | xi'an

On Cross Validated, I had a rather extended discussion with a user about a probability density as I thought it could be decomposed in two manageable conditionals and simulated by Gibbs sampling. The first component led to a Gumbel like density wirh y being restricted to either (0,1) or (1,∞) depending on β. ...
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Microsoft acquires Revolution Analytics – news roundup

January 26, 2015 | David Smith

There was a lot of news coverage on Friday and over the weekend about the news that Microsoft will acquire Revolution Analytics. Here are some links to just a few of the articles published. Wired: Microsoft is "heavily embracing the R programming language"; "the move deepens Microsof's investments in open ... [Read more...]

Presidential Approval and Applause

January 26, 2015 | jlebeau

Some may have seen a twitter post about spurious correlations that myself and others mentioned on twitter.  Basically this was a joke about how correlation can be found in many things that certainly have no influence over each other.  I ... [Read more...]

Goodness of fit test in R

January 26, 2015 | Hamed

As a data scientist, occasionally, you receive a dataset and you would like to know what is the generative distribution for that dataset. In this post, I aim to show how we can answer that question in R. To do that let's make an arbitrary dataset that we sample from ... [Read more...]

xkcd on P-values

January 26, 2015 | David Smith

From the "statistician humour" department, today's xkcd cartoon will ring a bell for anyone who's ever published (or read!) a scientific article including a P-value for a statistical test: If finding P-value excuses is a common activity for you (and let's hope not!) then R has you covered with the ... [Read more...]
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