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 optimized functions for computing common summaries over rows and columns of matrices, e.g. rowQuantiles(). There are also functions that operate on vectors, e.g. logSumExp(). Their implementations strive to...
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...
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 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...
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...
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....
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...
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…...
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...
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...
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'....
![Building [Security] Dashboards w/R & Shiny + shinydashboard](http://dds.ec/blog/images/2015/01/dashboard01.png)
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...
So, Harry Long came out with a new strategy on SeekingAlpha involving some usual mix of SPXL (3x leveraged SPY), … Continue reading →
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...
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...
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...
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...
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...
With today's announcement that Microsoft will acquire Revolution Analytics, it is worthwhile to consider the commercial support that has existed in different forms throughout the history of this open source...
A lot of my job–and side projects, for that matter–involve running R scripts on updates of open government data. While I’m infinitely grateful to have access to any interesting...
by David Smith, Chief Community Officer On behalf of the entire Revolution Analytics team I am excited to announce that Revolution Analytics is joining forces with Microsoft to bring...
Shiny version 0.11 is available now! Notable changes include: Shiny has migrated from Bootstrap 2 to Bootstrap 3 for its web front end. More on this below. The old...
Fitbit is a device that tracks your daily activity. It's basically a pedometer, but it does a little more. It has an altimeter, so it can count flight...
by Joseph Rickert Apache Spark, the open-source, cluster computing framework originally developed in the AMPLab at UC Berkeley and now championed by Databricks is rapidly moving from the bleeding...
A week or so ago I participated in the “Data Wrangling” webinar provided by RStudio. I found Garret Gromelund’s descriptions of the functions in tidyr and dplyr to be fantastic....
An announcement for the SMC 2015 workshop: Sequential Monte Carlo methods (also known as particle filters) have revolutionized the on-line and off-line analysis of data in fields as diverse...
Famous laws, theorems, and observations are often named after the person who proposed the idea. These “eponymous laws" can be graphed. We do so in this post,...
In a previous post I demonstrated how to use R’s simple built-in symbolic engine to generate Jacobian and (pseudo)-Hessian matrices that make non-linear optimization perform much more efficiently....
It’s frustrating when an application unexpectedly dies due to a network timeout or unavailability of a network resource. Veterans of …Continue reading →
Plotly: collaborative, publication-quality graphing.
