Monthly Archives: July 2014

Including GitHub and Bioconductor on Rdocumentation: Technical Details

July 10, 2014
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Including GitHub and Bioconductor on Rdocumentation: Technical Details

In our last blog post we announced the addition of GitHub and  Bioconductor R packages to Rdocumentation. For the more technical amongst you, I’ll give a short, high-level description of what’s under the hood at Rdocumentation. Along with that I’ll zoom in on some of the challenges encountered while adding GitHub and Bioconductor repositories. Rdocumentation

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In case you missed it: June 2014 Roundup

July 9, 2014
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In case you missed them, here are some articles from June of particular interest to R users: The useR! 2014 conference in Los Angeles opened with 16 tutorials. DataInformed published an article by David Smith on how various companies use R. Joe Rickert reviews the new book "Applied Predictive Modeling" by Max Kuhn and Kjell Johnson, which is rich...

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FRAMA Part IV: Continuing the Long/Short Filter Search

July 9, 2014
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FRAMA Part IV: Continuing the Long/Short Filter Search

This post examines an n-day median filter for two desirable properties: robustness to outliers and an inherent trend-confirming lag. While … Continue reading →

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Buster – a new R package for bagging hierarchical clustering

July 9, 2014
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Buster – a new R package for bagging hierarchical clustering

I recently found myself a bit stuck. I needed to cluster some data. The distances between the data points were not representable in Euclidean space so I had to use hierarchical clustering. But then I wanted stable clusters that would retain their shape as I updated the data set with new observations. This I could … Continue reading...

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Recording of OpenCPU talk at #useR2014

July 9, 2014
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Recording of OpenCPU talk at #useR2014

A recording of the useR! 2014 prentation about OpenCPU is now available on Youtube. This talk gives a brief (20 minute) motivation and introduction to some of the high level concepts of the OpenCPU system. The video contains mostly screen recor...

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Can Rcpp fuse ?

July 8, 2014
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Can Rcpp fuse ?

One of the features of Rcpp11 people seemed to like during useR is the fuse function. fuse is somewhat similar to the c function in R. For the purpose of this post, let's simplify what fuse does, and just say that it takes several compatible vector...

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Are Consumer Preferences Deep or Shallow?

July 8, 2014
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Are Consumer Preferences Deep or Shallow?

John Hauser, because no one questions his expertise, is an excellent spokesperson for the viewpoint that consumer preferences are real, as presented in his article "Self-Reflection and Articulated Consumer Preferences." Simply stated, preferences are e...

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Speed Tests for Rolling/Running Functions

July 8, 2014
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I use rolling and running functions almost daily with financial time series. In my post A Whole New World with Chains and Pipes, I made this statement I have noticed that rolling analysis with xts can sometimes be slow. as.matrix is my favorite way to ...

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Buster – a new R package for bagging hierarchical clustering

July 8, 2014
By

I recently found myself a bit stuck. I needed to cluster some data. The distances between the data points were not representable in Euclidean space so I had to use hierarchical clustering. But then I wanted stable clusters that would retain their shape as I updated the data set with new observations. This I could

Read more »

R Day at Strata NYC

July 8, 2014
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R Day at Strata NYC

RStudio will teach the new essentials for doing data science in R at this year’s Strata NYC conference, Oct 15 2014. R Day at Strata is a full day of tutorials that will cover some of the most useful topics in R. You’ll learn how to manipulate and visualize data with R, as well as

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