Qualitative Text Analysis in R with RQDA

May 28, 2015
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Last Friday at the Davis R Users’ Group, Mallory Johnson gave a presentation on RQDA, an R-based GUI tool for doing coding on documents for use in qualitative text analysis. Here’s the video, and you can view the slides here Resources The RQDA home page More RQDA instructional videos

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SparkR preview by Vincent Warmerdam

May 28, 2015
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SparkR preview by Vincent Warmerdam

SparkR preview in Rstudio Apache Spark is the hip new technology on the block. It allows you to write scripts in a functional style and the technology behind it...

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RevoScaleR’s Naive Bayes Classifier rxNaiveBayes()

May 28, 2015
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RevoScaleR’s Naive Bayes Classifier rxNaiveBayes()

by Joseph Rickert, Because of its simplicity and good performance over a wide spectrum of classification problems the Naïve Bayes classifier ought to be on everyone's short list of...

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No THIS Is How You Dplyr and Data.Table!

May 28, 2015
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So, I got some great solutions to my dplyr mutation problem to share. Just wait until you see these things! Remember, I was having trouble reconciling two date columns into...

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An R Enthusiast Goes Pythonic!

May 28, 2015
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An R Enthusiast Goes Pythonic!

I’ve spent so many years using and broadcasting my love for R and using Python quite minimally. Having read recently about machine learning in Python, I decided to take...

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2015 Fantasy Football Projections using OpenCPU

May 28, 2015
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2015 Fantasy Football Projections using OpenCPU

We are releasing our 2015 fantasy football projections in an OpenCPU app.  The app allows you to calculate custom rankings/projections for your league based on your league settings.  The...

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Beta unblockers

May 28, 2015
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Beta unblockers

A couple of weeks ago, we've uploaded the new version of BCEA on CRAN, to include the function implementing our method for the computation of the EVPPI based on INLA-SPDE $-$...

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Free Kaggle Machine Learning Tutorial for R

May 28, 2015
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Free Kaggle Machine Learning Tutorial for R

Always wanted to compete in a Kaggle competition, but not sure you have the right skill set? We created a free interactive tutorial to help you out! Together with the team behind Kaggle,...

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Comrades Marathon Medal Predictions

May 28, 2015
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Comrades Marathon Medal Predictions

With only a few days to go until race day, most Comrades Marathon athletes will focusing on resting, getting enough sleep, hydrating, eating and giving a wide berth to...

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Live Earthquake Map with Shiny and Google Map API

May 27, 2015
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Live Earthquake Map with Shiny and Google Map API

In the post Exchange data between R and the Google Maps API using Shiny I presented a very simple way to allow communication between R and javascript...

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Creating Styled Google Maps in ggmap

May 27, 2015
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Creating Styled Google Maps in ggmap

In R, my go to package for creating maps is ggmap. Using this, one can create maps using a variety of services, including Google maps. I just...

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8 new R jobs (2015-05-27)

May 27, 2015
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8 new R jobs (2015-05-27)

This is the bimonthly post (for 2015-05-27) for new R Jobs from R-users.com. Employers: visit this link to post a new R job to the R community (it’s free and quick). Job seekers: please follow the links below to learn...

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R tops 2015 KDnuggets Software Poll

May 27, 2015
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R tops 2015 KDnuggets Software Poll

R is the leading choice for Predictive Analytics / Data Mining / Data Science software according to the results of the 2015 KDnuggets Software Poll, now in its 16th...

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R #1 by Wide Margin in Latest KDnuggets Poll

May 27, 2015
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R #1 by Wide Margin in Latest KDnuggets Poll

The results of the latest KDnuggets Poll on software for Analytics, Big Data and Data Mining are out, and R has moved into the #1 position by a wide...

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Is This How You Dplyr?

May 27, 2015
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Yesterday I ran into a fairly complex issue regarding dplyr mutation and I wanted to get your take on my solution. I have two data frames with the same identifiers...

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BMC favors source code plagiarism

May 27, 2015
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BMC favors source code plagiarism

I found source code plagiarism a year ago and reported this case to BMC Systems Biology: I listed source code of many functions that are exactly copied from GOSemSim with...

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drat 0.0.4: Yet more features and documentation

A new version, now at 0.0.4, of the drat package arrived on CRAN yesterday. Its name stands for drat R Archive Template, and it helps with easy-to-create and...

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R Recipe: Aligning Axes in ggplot2

May 27, 2015
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R Recipe: Aligning Axes in ggplot2

Faceted plots in ggplot2 are phenomenal. They give you a simple way to break down an array of plots according to the values of one or more categorical variables....

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the Flatland paradox [#2]

May 26, 2015
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the Flatland paradox [#2]

Another trip in the métro today (to work with Pierre Jacob and Lawrence Murray in a Paris Anticafé!, as the University was closed) led me to infer—warning!, this is...

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Respecting Real-World Decision Making and Rejecting Models That Do Not: No MaxDiff or Best-Worst Scaling

May 26, 2015
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Respecting Real-World Decision Making and Rejecting Models That Do Not: No MaxDiff or Best-Worst Scaling

Utility has been reified, and we have committed the fallacy of misplaced concreteness.As this link illustrates, Sawtooth's MaxDiff provides an instructive example of reification in marketing research. What is the...

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A quick, incomplete comparison of ggplot2 & rbokeh plotting idioms

May 26, 2015
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A quick, incomplete comparison of ggplot2 & rbokeh plotting idioms

I set aside a small bit of time to give rbokeh a try and figured I’d share a small bit of code that shows how to make the “same”...

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New package on CRAN: lamW

May 26, 2015
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Recently, in various research projects, the Lambert-W function arose a number of times. Somewhat frustratingly, there is no built-in function in R to calculate it. The only options were...

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Situational Baseball: Analyzing Runs Potential Statistics

May 26, 2015
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By Mark Malter A few weeks ago, I wrote about my Baseball Stats R shiny application, where I demonstrated how to calculate runs expectancies based on the 24 possible...

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New Version of RStudio (v0.99) Available Now

May 26, 2015
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New Version of RStudio (v0.99) Available Now

We’re pleased to announce that the final version of RStudio v0.99 is available for download now. Highlights of the release include: A new data viewer with support for large datasets, filtering,...

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Communicating Risk at the Bay Area R User Group

May 26, 2015
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I will be speaking at the Bay Area User Group meeting tonight about Communicating Risk. Anthony Goldbloom from Kaggle and Karim Chine from ElasticR will be there as well....

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Searching for the Steamer retroelement in the ocean metagenome

May 25, 2015
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Searching for the Steamer retroelement in the ocean metagenome

Last week, I was listening to episode 337 of the podcast This Week in Virology. It concerned a retrovirus-like sequence element named Steamer, which is associated with a transmissible...

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R and Data Mining workshop at Deakin University

May 25, 2015
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R and Data Mining workshop at Deakin University

I will run a workshop on R and Data Mining for students in the Master of Business Analytics course at Deakin University in Melbourne on Thursday 28 May. The...

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Granger Causality Test

May 25, 2015
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Granger Causality Test

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Open data sets you can use with R

May 25, 2015
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R is an environment for programming with data, so unless you're doing a simulation study you'll need some data to work with. If you don't have data of your...

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