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 in Japanese, but in this post I’ll share brief a summary…Read more ›
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 →
I recently delivered a workshop on a practical introduction to shiny, an R package that enables development, testing and deployment of interactive web applications. Delivered at the University of Sydney’s Institute...
Inspired by Tufte's classic visualization of New York City weather in 2013, Alex Bresler used the R language to update the chart for 2014: (Click the image to view...
A forewarning, this post is me going out on a limb, to say the least. In fact, it’s a post/project … Continue reading →
I use mix models as a way to find general patterns integrating different levels of information (i.e. the random effects). Sometimes you only want to focus on the general...
I wanted yet another opportunity to get to use the fabulous caret package, but also to finally give plot.ly a try. To scratch both itches, I dipped into the...
Inspired by this post about visualizing shrinkage on Coppelia, and this thread about visualizing mixed models on Stack Exchange, I started thinking about how to visualize shrinkage...
by Bob Horton, Data Scientist, Revolution Analytics From electronic medical records to genomic sequences, the data deluge is affecting all aspects of health care. The Masters of Science in...
Last week version 1.0 of the caretEnsemble package was released to CRAN. I have co-authored this package with Zach Mayer, who had the original idea of allowing for ensembles...
Thanks to user dnlbrky, we now have a third way to accomplish sessionizing log data for any arbitrary time out period (see methods 1 and 2), this time using data.table...
Plotly: collaborative, publication-quality graphing.
