547 search results for "Register"

Introducing simmer: Discrete Event Simulation for R

September 3, 2014
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Introducing simmer: Discrete Event Simulation for R

Introduction The simmer package grew out of a personal need for a simple rapid development discrete event simulation (DES) framework. I work in the hospital sector and at times use a DES approach to simulate hospital processes / patient trajectories. DES can give you a quick look at process bottlenecks and test out the impact The post

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Notifications from R

September 3, 2014
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Notifications from R

You just sent a long R job running. How to know when it’s done? Have it notify you by beeping, sending you a text, or sending you a notification via pushbullet! beepr You can use Rasmus Bååth’s beepr package to have your computer play a sound. Install it from CRAN with Then, at the bottom

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The Limit of ATR Order Sizing

September 2, 2014
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The Limit of ATR Order Sizing

Before beginning this post, I’d like to notify readers that I have a webcast tomorrow (Wednesday, Sep. 3) at 4:30 … Continue reading →

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Spline interpolation of temporal resolution for satellite images.

August 25, 2014
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Spline interpolation of temporal resolution for satellite images.

This week, I had a discussion with a few of my colleagues on the possibility of utilizing remote sensing data or satellite images to improve our statistical estimation such as imputation. One source of interest is the

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21 R navigation tools

August 17, 2014
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21 R navigation tools

Navigation gets you from where you are to where you want to be. Speaking of navigation, you can jump to selected sections of this post: Navigation; R-bloggers; Task views; Rdocumentation.org; sos package; ??; apropos; ls; methods; getAnywhere; :::; find; args; grep; %in%; str; getwd; file.choose; Spyglass summary; browser; See also. Overview Figure 1: A map The post

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Quicksort speed, just in time compiling and vectorizing

August 17, 2014
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Quicksort speed, just in time compiling and vectorizing

I was reading the Julia documentation the other day. They do speed comparisons to other languages. Obviously R does not come out very well. The R code for quicksort is here and I noticed it was not vectorized at all. So I wondered if it could be improv...

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Update to resolv (0.1.2) + valgrind and R + Parallel DNS Requests with Revolution R’s ‘foreach’ and `doParallel`

August 15, 2014
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Thanks to a blog comment by @arj, I finally ran at least one of the new Rcpp-based through valgrind (resolv) and, sure enough there were a few memory leaks which are now fixed. However, I first ran valgind with a simple test R script that just did library(stats) to get a baseline (and dust off some...

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Critical Data (free) Hackathon in London (Sept 6-7, 2014)

August 11, 2014
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We would like to invite you to participate in our forthcoming Critical Data Marathon a FREE event taking place in London on 6-7 September 2014. The event is collaboratively organised between researchers at Massachusetts Institute of Technology (MIT), University College London, King’s College London, and Imperial College London.The data marathon will bring together frontline healthcare providers (nurses, pharmacists, doctors) with data scientists to...

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Master R Developer Workshop – San Francisco, January 19-20

August 11, 2014
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Master R Developer Workshop – San Francisco, January 19-20

RStudio is planning a new Master R Developer Workshop to be taught by Hadley Wickham in the San Francisco Bay Area on January 19-20. This will be the same workshop that Hadley is teaching in September in New York City to a sold out audience. If you did not get a chance to register for the

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Guns are Cool – Differences between states

August 3, 2014
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Guns are Cool – Differences between states

Last week my blog showed that there are differences between states in the shootingtracker database. This week it is attempted to understand why states are different. A number of variables were extracted from a few sources, among which gun laws, % ...

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