What a Gas! The Falling Price of Oil and Ontario Gasoline Prices

January 27, 2015
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What a Gas! The Falling Price of Oil and Ontario Gasoline Prices

IntroductionIn case you've been living under a rock, there's been a lot of chatter in the financial world late about the price of oil going down. Way, way, down. So much so that the Bank of Canada cut interest rates. What crazy times are these we live in? I thought gas was only going to...

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Check your return types when modeling in R

January 27, 2015
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Check your return types when modeling in R

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...

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Parallel Programming with GPUs and R

January 27, 2015
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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...

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googleVis version 0.5.8 released

January 27, 2015
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googleVis version 0.5.8 released

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...

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Why you should learn R first for data science

January 26, 2015
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Why you should learn R first for data science

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.”...

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RWE npower Forecasting Challenge

January 26, 2015
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RWE npower Forecasting Challenge

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...

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the density that did not exist…

January 26, 2015
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the density that did not exist…

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...

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PACKAGE: matrixStats 0.13.1 – Methods that Apply to Rows and Columns of a Matrix (and Vectors)

January 26, 2015
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PACKAGE: matrixStats 0.13.1 – Methods that Apply to Rows and Columns of a Matrix (and Vectors)

A new release 0.13.1 of matrixStats is now on CRAN. The source code is available on GitHub. What does it do? The matrixStats package provides highly...

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Microsoft acquires Revolution Analytics – news roundup

January 26, 2015
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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...

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Presidential Approval and Applause

January 26, 2015
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Presidential Approval and Applause

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...

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xkcd on P-values

January 26, 2015
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xkcd on P-values

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:...

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Wine for Breakfast: Consumption Occasion as the Unit of Analysis

January 26, 2015
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Wine for Breakfast: Consumption Occasion as the Unit of Analysis

If the thought of a nice Chianti with that breakfast croissant is not that appealing, then I have made by point: occasion shapes consumption. Our tastes have been fashioned...

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5 new R jobs (2015-01-26)

January 26, 2015
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5 new R jobs (2015-01-26)

This is the bimonthly R Jobs post (for 2015-01-26), based on the R-bloggers’ sister website: R-users.com. If you are an employer who is looking to hire people from the R community, please visit this link...

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Docker and Enabling Analytic Workflows

January 26, 2015
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By Mark Sellors – Senior IT Consultant, UK It’s been a few months now since I presented on the ways in which Mango are using Docker at EARL 2014...

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One of My Favorite R Oddities: dump()

January 26, 2015
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One of My Favorite R Oddities:  dump()

R is full of things that make "real programmers" (I dislike this term) turn their noses up in disgust. One of my favorites is the dump() function. It is...odd....

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stringdist 0.9: exercise all your cores

January 26, 2015
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stringdist 0.9: exercise all your cores

The latest release of the stringdist package for approximate text matching has two performance-enhancing novelties. First of all, encoding conversion got a lot faster since this is now done...

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Comparing the contribution of NBA draft picks

January 25, 2015
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Comparing the contribution of NBA draft picks

When it comes to the NBA draft, experts tend to argue about a number of things: at which position will a player be selected? what is the best draft class ever? etc…...

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World Ocean Atlas changes

January 25, 2015
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World Ocean Atlas changes

Introduction The ocedata R package has a dataset named levitus, which stores sea-surface temperature and salinity. Today, the development version of ocedata (available at github) was updated from the...

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RcppArmadillo 0.4.600.4.0

January 25, 2015
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Conrad put up a maintenance release 4.600.4 of Armadillo a few days ago. As in the past, we tested this with number of pre-releases and test builds...

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Tokyo-based R Meetup TokyoR #45

January 25, 2015
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Tokyo-based R Meetup TokyoR #45

Last week, I attended a Tokyo-based Statistical Software R meetup named “TokyoR #45” held on Jan 17 at VOYAGE GROUP office in Shibuya, Tokyo. Almost all presentations were given...

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Odds, odds ratio, language and intuition

January 25, 2015
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I was reading a statistics book the other day. I am at the beginning. In this section I read '(we) report results as odds ratios, which is more intuitive'....

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Building [Security] Dashboards w/R & Shiny + shinydashboard

January 24, 2015
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Building [Security] Dashboards w/R & Shiny + shinydashboard

Jay & I cover dashboards in Chapter 10 of Data-Driven Security (the book) but have barely mentioned them on the blog. That’s about to change with a new...

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A New Harry Long Strategy and A Couple of New PerfA Functions

January 24, 2015
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A New Harry Long Strategy and A Couple of New PerfA Functions

So, Harry Long came out with a new strategy on SeekingAlpha involving some usual mix of SPXL (3x leveraged SPY), … Continue reading →

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Rcpp 0.11.4

January 24, 2015
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A new release 0.11.4 of Rcpp is now on the CRAN network for GNU R, and an updated Debian package will be uploaded in due...

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RcppGSL 0.2.4

January 24, 2015
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A new version of RcppGSL is now on CRAN. This package provides an interface from R to the GNU GSL using our Rcpp package. This follows on the heels...

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RcppAnnoy 0.0.5

January 24, 2015
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A new version of RcppAnnoy is now on CRAN. RcppAnnoy wraps the small, fast, and lightweight C++ template header library Annoy written by Erik Bernhardsson for use at...

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GPU Tutorial, with R Interfacing

January 24, 2015
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GPU Tutorial, with R Interfacing

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...

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Microsoft to acquire Revolution Analytics: Now this gets interesting…

January 23, 2015
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Microsoft to acquire Revolution Analytics: Now this gets interesting…

I'm excited about Microsoft acquiring Revolution R. Microsoft has created business friendly tools for many decades and this is a great opportunity for them to bring the power of...

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RSS feeds for statistics and related journals

January 23, 2015
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I’ve now resurrected the collection of research journals that I follow, and set it up as a shared collection in feedly. So anyone can easily subscribe to all of the...

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