Publications by Joseph Rickert
A first look at Distributed R
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 end goal of running R code in parallel on data that is distribu...
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Type III tests and R
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 of the survival package I thought I should understand the issue more deeply. It took far long...
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Some R Highlights from the Bay Area Data Science Camp and Unconference
by Joseph Rickert The San Francisco Bay Area Chapter of the Association of Computing Machinery (ACM) has been holding an annual Data Mining Camp and “unconference” since 2009. This year, to reflect the times, the group held a Data Science Camp and unconference, and we at Revolution Analytics were, once again, very happy to be a sponsor for th...
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A Look at the World Values Survey
by Peggy FanPh.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 include questions...
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Looking into a very messy data set
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 with 50,000 rows and 15,000 columns. The “small” file al...
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3D Plots with ggplot2 and Plotly
by Matt SundquistPlotly, 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. In this post we will show how to make 3D plots with ggp...
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A look at the igraph package
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 currently igraph lists 72 reverse depends...
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Introduction to Revolution R Enterprise For Big Data Analytics on datacamp.com
by Jeremy ReynoldsSenior R Trainer, Revolution Analytics Last week, Revolution Analytics released its first massive open, online course through a partnership with datacamp.com: Introduction to Revolution R Enterprise for Big Data Analytics. You can sign up for the free course here. This course provides a look at some of the tools provided by the...
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Partying R Style with Sqor Sports, R on Azure, and data.table
by Joseph Rickert We usually have a pretty good time at the monthly Bay Area useR Group (BARUG) meetings, but this month's meeting was a bit more of a party than usual. The very well connected PR team at Sqor Sports, our host company for the evening, secured San Francisco's tres trendy 111 Minna Gallery for the venue. There was a full bar, hous...
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What’s the most popular German car where you live?
by Tim WinkePhD student in Demography and Social Sciences in Berlin This post has been abstracted from Tim's entry to a contest that Dalia Research is running based on a global smarthpone survey that they are conducting. Tim's entry post is available as is all of the code behind it. – editor When people think about Germany, what comes to their...
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