Articles by Joseph Rickert

Video: H2O Talks by Trevor Hastie and John Chambers

January 2, 2015 | Joseph Rickert

by Joseph Rickert In a recent post, where I presented some R related highlights of November's H20 World conference, I singled out and described talks by Trevor Hastie and John Chambers and remarked that it would be nice if the videos would be made available. Well, thanks to the generosity ... [Read more...]

The 6th Spanish R Users Conference

December 30, 2014 | Joseph Rickert

by Emilio L. Cano The VI Spanish R Users Conference took place on October 23 and 24 in Santiago de Compostela (Spain). It was a two-day event with a variety of talks and workshops about the R statistical software and programming language and its applications. First of all, let me thank all ... [Read more...]

Interactive 2D & 3D Plots with Plotly and ggplot2

December 16, 2014 | Joseph Rickert

by Matt Sundquist co-founder of Plotly R, Plotly, and ggplot2 let you make, share, and collaborate on beautiful, interactive plots online. Let's see what we can do with the topographic data from Auckland's Maunga Whau Volcano that comes with R. Copy and paste this R code to make your first ... [Read more...]

New ASA Guidelines for Undergraduate Statistics Programs

December 12, 2014 | Joseph Rickert

by Joseph Rickert The American Statistical Association (ASA) Undergraduate Guidelines Workgroup recently published the report Curriculum Guidelines for Undergraduate Programs in Statistical Science. Although intended for educators setting up or revamping Stats programs at colleges and universities, this concise, 17 page document should be good reading for anyone who wants to ... [Read more...]

Some R User Group Highlights for November 2014

December 4, 2014 | Joseph Rickert

by Joseph Rickert November was an active and creative month for R user groups with over 50 events listed on the Revolution Analytics' Community Calendar. Here are some highlights that can be found by visiting the websites of a few of the groups that post and share presentations. James Thomson was ... [Read more...]

Some R Highlights from H20 World

November 28, 2014 | Joseph Rickert

by Joseph Rickert H2O.ai held its first H2O World conference over two days at the Computer History Museum in Mountain View, CA. Although the main purpose of the conference was to promote the company's rich set of Java based machne learning algorithms and announce their new products ... [Read more...]

A look at the igraph package

November 13, 2014 | Joseph Rickert

by Joseph Rickert The igraph package has become a fundamental tool for the study of graphs and their properties, the manipulation and visualization of graphs and the statistical analysis of networks. To get an idea of just how firmly igraph has become embedded into the R package ecosystem consider that ... [Read more...]

3D Plots with ggplot2 and Plotly

November 11, 2014 | Joseph Rickert

by Matt Sundquist Plotly, co-founder Plotly is a platform for data analysis, graphing, and collaboration. You can use ggplot2, Plotly's R API, and Plotly's web app to make and share interactive plots. Now, you can you can also make 3D plots. Immediately below are a few examples of 3D plots. ... [Read more...]

Looking into a very messy data set

November 6, 2014 | Joseph Rickert

by Joseph Rickert I recently had the opportunity to look at the data used for the 2009 KDD Cup competition. There are actually two sets of files that are still available from this competition. The "large" file is a series of five .csv files that when concatenated form a data set ... [Read more...]

A Look at the World Values Survey

November 4, 2014 | Joseph Rickert

by Peggy Fan Ph.D. Candidate at Stanford's Graduate School of Education Part of my dissertation at Stanford Graduate School of Education, International Comparative Education program, is looking at the World Values Survey (WVS), a cross-national social survey that started in 1981. Since then there has been 6 waves, and the surveys ... [Read more...]

Type III tests and R

October 28, 2014 | Joseph Rickert

by Terry M. Therneau Ph.D. Faculty, Mayo Clinic About a year ago there was a query about how to do "type 3" tests for a Cox model on the R help list, which someone wanted because SAS does it. The SAS addition looked suspicious to me, but as the author ... [Read more...]

A first look at Distributed R

October 23, 2014 | Joseph Rickert

by Joseph Rickert One of the most interesting R related presentations at last week’s Strata Hadoop World Conference in New York City was the session on Distributed R by Sunil Venkayala and Indrajit Roy, both of HP Labs. In short, Distributed R is an open source project with the ... [Read more...]

A Note on Tweedie

October 9, 2014 | Joseph Rickert

by Joseph Rickert In a recent post I talked about the information that can be developed by fitting a Tweedie GLM to a 143 million record version of the airlines data set. Since I started working with them about a year or so ago, I now see Tweedie models everywhere. Basically, ... [Read more...]
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