Monthly Archives: July 2014

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
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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

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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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DSC 2014, Day 2

July 8, 2014
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DSC 2014, Day 2

This will be somewhat shorter summary of the second day of DSC 2014. There was a wider variety of presentations today, but I am only going to discuss those that touched on the main theme of the day, which was … Continue reading →

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Dependencies of popular R packages

July 8, 2014
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Dependencies of popular R packages

With the growing popularity of R, there is an associated increase in the popularity of online forums to ask questions. One of the most popular sites is StackOverflow, where more than 60 thousand questions have been asked and tagged to be related to R. On the same page, you can also find related tags. Among the top 15 tags...

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meteoForecast, a package to obtain NWP-WRF forecasts in R

meteoForecast, a package to obtain NWP-WRF forecasts in R

The Weather Research and Forecasting (WRF) Model is a numerical weather prediction (NWP) system. NWP refers to the simulation and …Sigue leyendo →

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googleVis 0.5.3 released

July 8, 2014
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googleVis 0.5.3 released

Recently we released googleVis 0.5.3 on CRAN. The package provides an interface between R and Google Charts, allowing you to create interactive web charts from R.Screen shot of some of the Google ChartsAlthough this is mainly a maintenance release, I'd...

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analyze the demographic and health surveys (dhs) with r

July 8, 2014
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professors of public health 101 probably cite the results of the demographic and health surveys (dhs) more than all other data sources combined.  funded by the united states agency for international development (usaid) and administered by the tech...

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Reflections on useR! 2014

July 7, 2014
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Reflections on useR! 2014

UseR! 2014, the R user conference held last week in LA, was the most successful yet. Around 700 R users from around the world converged on the UCLA campus to share their experiences with the R language and to socialize with other data scientists, statisticians and others using R. The week began with a series of 3-hour tutorials on...

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