November 2015

Three Fun Facts About Black Friday and Thanksgiving

November 24, 2015 | Plotly Blog

Thanksgiving has been a national holiday in the United States since 1941 and Canada since 1957. Black Friday, while not an official holiday, marks the unofficial of the holiday shopping season. These three graphs show the increasing price of a pound of turkey, turkey production by U.S. state, and the the ...
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a programming bug with weird consequences

November 24, 2015 | xi'an

One student of mine coded by mistake an independent Metropolis-Hastings algorithm with too small a variance in the proposal when compared with the target variance. Here is the R code of this implementation: It produces outputs of the following shape which is quite amazing because of the small variance. The ...
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Mapping out Marriott’s Starwood Acquisition

November 24, 2015 | Joseph Rickert

by Michael Helbraun The software business includes travel, and that means hotels. The news that Marriott was acquiring Starwood was of particular interest to me – especially since more than 75% of my 95 nights so far this year on the road have been spent with one of those two companies. While other ... [Read more...]

Fitting linear mixed models for QTL mapping

November 24, 2015 | Karl Broman

Linear mixed models (LMMs) have become widely used for dealing with population structure in human GWAS, and they’re becoming increasing important for QTL mapping in model organisms, particularly for the analysis of advanced intercross lines (AIL), which often exhibit variation in the relationships among individuals. In my efforts on ... [Read more...]

DataOps at SQL in the City

November 24, 2015 | Angela Roberts

By Steph Locke Back in October, I had the pleasure of going along to the annual Redgate conference SQL in the City. This was a great day full of informative talks on how people are becoming more agile with their … Continue reading → [Read more...]

PowerBI adds support for R

November 23, 2015 | David Smith

In the latest update released on November 20, PowerBI has added support for R. The desktop edition of Microsoft's data visualization and reporting tool now allows you to run an R script to generate data; the resulting data frames from the script can then be used for data visualization or any ... [Read more...]

Troubleshooting ‘Rattle’ (R library) Installation on Ubuntu

November 23, 2015 | Anirudh

This post pertains to Ubuntu / Debian users only. rattle is a free graphical interface for data mining with R. I wanted to visualize decision trees and had to install this library. __ install.packages('rattle') got me the following error message: configure: error: GTK version 2.8.0 required ERROR: configuration failed for package ‘...
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Classifying Guardian News Articles Using Naive Bayes

November 23, 2015 | Jasper Ginn

A while back, I adapted the Naive Bayes model used in this excellent video to classify text documents in Python. Classifying text documents is a fairly straightforward task which is fun to do, and so I wanted to test it out by classifying articles from the Guardian belonging to four ... [Read more...]
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