February 2018

Project Euler in R

February 28, 2018 | Random R Ramblings

Project Euler This is just a short blog post to raise some awareness to some fun programming and mathematical challenges I recently came across, hosted on Project Euler. The idea behind Project Euler is to provide abstract programming challenges for p... [Read more...]

Criminal goings-on in a random forest

February 28, 2018 | Carl Goodwin

There's a pay-off from an exploration of multiple supervised machine learning models. We'll explore five approaches whilst predicting criminal goings-on in London. The post Criminal goings-on in a random forest appeared first on thinkr.
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#17: Dependencies.

February 28, 2018 | Thinking inside the box

Dependencies are invitations for other people to break your package. -- Josh Ulrich, private communication Welcome to the seventeenth post in the relentlessly random R ravings series of posts, or R4 for short. Dependencies. A truly loaded topic. As R users, we are spoiled. Early in the history of R, ... [Read more...]

2015 US Fatal Vehicle Accidents Analysis

February 28, 2018 | Matthew SUN

-- title: "2015 US Fatal Vehicle Accidents Analysis" author: "Matthew Sun" date: "2/01/2018" output: html_document: default --- #### Introduction   There are over 5 millions of vehicle accidents reported in the US in 2015, according to data from National Highway Traffic Safety Administration (NHTSA). About 7% of them are fatal accidents. As the […] [Read more...]

SafeGram: visualising drug safety

February 27, 2018 | Chris

Update: an RMarkdown notebook explaining the whole process is available here. Visualising vaccine safety is hard. Doing so from passive (or, as we say it in Britain, ‘spontaneous’!) pharmacovigilance (PhV) sources is even harder. Unlike in active or trial pharmacovigilance, where you are essentially dividing the number of incidents by ...
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Adding logging to a shiny app with loggit

February 27, 2018 | Roel M. Hogervorst

This is a very short post with example code Over time when you move your shiny app from your computer to a server, you want to add some logging. Generally logging is defined in levels : INFO (everything you want to print), WARNING (it does not stop the application, but it ... [Read more...]

Training Courses for mlr: Machine Learning in R

February 27, 2018 | Giuseppe Casalicchio

The mlr: Machine Learning in R package provides a generic, object-oriented and extensible framework for classification, regression, survival analysis and clustering for the statistical programming language R. The package targets practitioners who want to quickly apply machine learning algorithms, as well as researchers who want to implement, benchmark, and compare ...
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Using RcppArmadillo to price European Put Options

February 27, 2018 | Rcpp Gallery

Introduction In the quest for ever faster code, one generally begins exploring ways to integrate C++ with R using Rcpp. This post provides an example of multiple implementations of a European Put Option pricer. The implementations are done in pure R, pure Rcpp using some Rcpp sugar functions, and then ... [Read more...]

Image Recognition and Object Detection

February 27, 2018 | R on Locke Data Blog

In this latest blog, I’m responding to a cry for help. Someone got in touch with us recently asking for some advice on image detection algorithms, so let’s see what we can do! They already know what algorithms they want to use, so let’s start with those. ... [Read more...]

New releases: Microsoft R Client 3.4.3, Microsoft ML Server 9.3

February 27, 2018 | David Smith

An update to Microsoft R Client, Microsoft's distribution of open source R with additional proprietary packages — including RevoScaleR (for data analysis at scale) and MicrosoftML (for machine learning) — is now available. Microsoft R Client 3.4.3 updates the R engine to R 3.4.3, and (on Linux) now supports deploying computations to a remote ... [Read more...]

Are UFOs more commonly seen near US military bases?

February 27, 2018 | tealeaf

What do they know? Since the Roswell Incident in 1947, UFO’s have been associated with secretive military installations where mysterious craft dart across the night sky. Skeptics might hold that many UFO sightings, far from being extraterrestrial visitors, are better explained as experimental or conventional military craft. Does this association... [Read more...]
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