I recently got an email from a person at Packt publishing, who suggested I write a book for them about ggplot2. My answer, which is perfectly true, is that I don’t have the time, nor the expertise to do that. What I didn’t say is that 1) a quick ... [Read more...]

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We’re happy to announce that as of today, DataCamp has added two new and free online interactive courses to its curriculum: ‘Data Analysis and Statistical Inference‘ and ‘Introduction to Computational Finance‘.  They will be the biggest DataCamp courses to date, so we’re very excited to find out what ... [Read more...]

This post deals with the basics of character strings in R. My main reference has been Gaston Sanchez‘s ebook [1], which is excellent and you should read it if interested in manipulating text in R. I got the encoding’s section from [2], which is also a nice reference to have ... [Read more...]

Highlighting Facebook's mistakes and weaknesses is a popular sport. When you're the 800 lb gorilla of social networking, it's inevitable. The most recent rendition of FB bashing appeared in a serious study entitled, Epidemiological Modeling of Online Social Network Dynamics, authored by a couple of academics in the Department of Mechanical ... [Read more...]

Slides from the first session of my course about web scraping through R: Web scraping for the humanities and social sciencesIncludes an introduction to the paste function, working with URLs, functions and loops. Putting it all together we fetch data in... [Read more...]

by Joseph Rickert One of the key ideas in topological data analysis is to consider a data set to be a sample from a manifold in some high dimensional topological space and then to use the tools of algebraic topology to reconstruct the manifold. It turns out that the converse ... [Read more...]

A recent feature article in The Atlantic describes the rise of Artificial Intelligence (AI) and how researchers "conduct sophisticated data analyses using cloud resources such as Amazon Web Services and R, an open source application for statistic... [Read more...]

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On the Monkey Cage blog, Baptiste Coulmont (a.k.a. @coulmont) recently uploaded a post entitled “You can vote twice ! The many political appeals of proxy votes in France“, coauthored with Joël Gombin (a.k.a. @joelgombin), and myself. The study was initially written in French as mentioned in ... [Read more...]

The filtfilt function in R is supposedly based on the Matlab one, but it does quite badly on endpoints. My goal here is to explore alternatives, with a focus on the Octave method. NOTE: I may also try scipy for hints.) The best method of dealing with endpoints is still ... [Read more...]

We just released a new version of taxize - version 0.2.0. This release contains a number of new features, and bug fixes. Here is a run down of some of the changes: First, install and load taxize

install.packages<span>(</span><span>"rgbif"</span><span>)</span>

library<span>(</span>taxize<span>)</span>

New things New functions: class2tree Sometimes you just want to have ... [Read more...]

The 2012 GEFcom competition was a great success with several new innovative forecasting methods introduced. These have been published in the IJF as follows: Hong, Pinson and Fan. Global Energy Forecasting Competition 2012 Charleton and Singleton. A refined parametric model for short term load forecasting Lloyd. GEFCom2012 hierarchical load forecasting: Gradient boosting ... [Read more...]

OECD has just released a new PISA in Focus titled “Do parents’ occupations have an impact on student performance?”. A shiny app is an add-on to this article, you can open it from this link: http://beta.icm.edu.pl/PISAoccupations2012/. The app allows for comparisons of average performance in ... [Read more...]

[This article was first published on Digithead's Lab Notebook, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share [Read more...]

In the third and last of the ggplot series, this post will go over interesting ways to visualize the distribution of your data. [Read more...]

This Monday, in the ACT8595 course, we came back on elliptical distributions and conditional independence (here is an old post on de Finetti’s theorem, and the extension to Hewitt-Savage’s). I have shown simulations, to illustrate those two concepts of dependent variables, but I wanted to spend some time ... [Read more...]

Post also available with code executed inline at rpubs.com. O'Reilly recently published the results of a survey from attendees of the Strata Conference related to tool usage and salary.  The entire survey is available for download.  In the survey results, R was heralded as second only to SQL as ... [Read more...]

We have been working on new R package, genomation, that will help with the analysis of genomic intervals. Briefly, the package contains a collection of tools for visualizing and analyzing genome-wide data sets. The package works with a variet... [Read more...]

The second conference on R in Insurance will be held on Monday 14 July 2014 at Cass Business School in London, UK. The intended audience of the conference includes both academics and practitioners who are active or interested in the applications of R in Insurance. This one-day conference will focus on applications ... [Read more...]