Regression with Multicollinearity Yields Multiple Sets of Equally Good Coefficients

July 6, 2015
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Regression with Multicollinearity Yields Multiple Sets of Equally Good Coefficients

The multiple regression equation represents the linear combination of the predictors with the smallest mean-squared error. That linear combination is a factorization of the predictors with the factors equal to the regression weights. You may see the wo...

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R Consortium News Roundup

July 6, 2015
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In case you missed the news last week, the (https://www.r-consortium.org/news/announcement/2015/06/linux-foundation-announces-r-consortium-support-millions-users-around). This new non-profit trade group will work with the R Foundation to support the R Community...

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8 new R jobs (2015-07-06) – from @Virginia to @Paris

July 6, 2015
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8 new R jobs (2015-07-06) – from @Virginia to @Paris

This is the bimonthly post (for 2015-07-06) 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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Hygge at UseR! 2015, Aalborg

July 6, 2015
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Hygge at UseR! 2015, Aalborg

hygge A Danish word (pronounced HU-guh) meaning social coziness. I.e. the feeling of a good social atmosphere. – Urban Dictionary Yes, there was plenty of hygge to...

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A dynamic programming solution to A/B test design

July 6, 2015
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Our last article on A/B testing described the scope of the realistic circumstances of A/B testing in practice and gave links to different standard solutions. In this article we...

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EARL2015 Boston Keynote Speakers announced

July 6, 2015
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EARL2015 Boston Keynote Speakers announced

We are delighted to announce that the keynote speakers for EARL 2015 in Boston which takes place on 2nd-4th November will be David Smith, Garrett Grolemund, John Thompson and...

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Mango Solutions at UseR!2015

July 6, 2015
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Mango Solutions at UseR!2015

by Aimee Gott It probably hasn’t escaped your notice that last week Aalborg, Denmark played host to the annual UseR conference.  This is an annual R conference bringing together users...

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Stress testing

July 6, 2015
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Stress testing

Lately, we've been spending a lot of time "stress-testing" our method for the computation of the Expected Value of Partial Perfect Information (EVPPI $-$ I know: the terminology is...

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Two pending features to metricsgraphics

July 5, 2015
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I’ve been slowly prodding the metricsgraphics package towards a 1.0.0 release, but there are some rough edges that still need sorting out. One of them is the ability to...

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R is now important enought to have a paid for PR make-over

July 5, 2015
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With the creation of the R consortium R has moved up a rung on the ladder of commercial importance. R has captured the early adopters and has picked up...

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Speeding up R packages’ installation process

July 5, 2015
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Speeding up R packages’ installation process

There is a time for some things, and a time for all things; a time for great things, and a time for small things — Miguel de Cervantes Building...

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Hands-on computational genomics course in Berlin

July 5, 2015
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Hands-on computational genomics course in Berlin

Berlin Institute for Medical Systems Biology is organizing a computational genomics course and R programming will be used for most practical sessions. The course will cover basic statistics, programming...

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More on causes of death in Netherlands over the years

July 5, 2015
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More on causes of death in Netherlands over the years

Last week I had a post 'Deaths in the Netherlands by cause and age'. During creation of that post I made one plot which I had not shown. It...

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OpenCPU Release 1.5

July 4, 2015
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OpenCPU Release 1.5

Following a few weeks of testing, OpenCPU 1.5 has been released. OpenCPU is a production-ready framework for embedded statistical computing...

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The Greek thing II

July 4, 2015
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The Greek thing II

Just few hours before Greeks head to the polls to decide on the bailout agreement, and ultimately, whether the country will stay in the euro, there is no overwhelming...

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The Greek thing

July 4, 2015
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The Greek thing

Greeks have been quite volatile on their opinion whether they should accept or not a proposal by the country's creditors for more austerity to keep aid flowing. The polls...

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IFAR Draft Submitted

July 4, 2015
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IFAR Draft Submitted

I have submitted a draft of the Introduction to Fisheries Analyses with R to the publisher.  It will now be submitted to a thorough editorial review in preparation for...

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The Nature of Heterogeneity in Coevolving Networks of Customers and Products

July 3, 2015
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The Nature of Heterogeneity in Coevolving Networks of Customers and Products

The genre shirt asks, "What kind of music do u listen 2?"Microgenres exist because markets are fragmenting and marketers need names to attract emerging customer segments with increasingly specific...

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A Tutorial on Writing Simulation Apps in Shiny

July 3, 2015
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I stand in awe of the R wizards who post their latest and greatest Shiny feats on R-Bloggers. It’s taken me a while to find my...

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Chronicles from useR! – day 3

Chronicles from useR! – day 3

I survived to the Conference Dinner and I took the last

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Review: Machine Learning with R Cookbook

July 3, 2015
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"Machine Learning with R Cookbook" by Chiu Yu-Wei is nothing more or less than it purports to be: a collection of 110 recipes for applying Data Analysis and Machine...

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FSA Modifications

July 3, 2015
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FSA Modifications

I am nearly ready to submit a draft of the Introduction to Fisheries Analysis with R book to the publisher.  Relatedly, I am preparing the FSA package to be...

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The state of assertions in R

July 3, 2015
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The state of assertions in R

“Assertion” is computer-science jargon for a run-time check on your code. In R , this typically means function argument checks (“did they pass a numeric vector rather than a...

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SparkR with Rstudio in Ubuntu 12.04

July 3, 2015
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SparkR with Rstudio in Ubuntu 12.04

Welcome to the blog post! It’s been long time since I wrote last post. I was recently searching about big data with R and I found sparkR package. Few...

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useR 2015: it’s a wrap!

July 3, 2015
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The latest worldwide R user conference has just wrapped up in Aalborg, Denmark and useR! 2015 was the best yet. A hearty round of applause to the organizers for...

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Chronicles from useR! – day 2

July 2, 2015
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Chronicles from useR! – day 2

As written by my colleague Nicola in the post of day 1,

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Exploring the Demographics of Ferguson, Missouri

July 2, 2015
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Exploring the Demographics of Ferguson, Missouri

One interesting feature of Census data is that it can help us to better understand current events and claims by the media. For example, the news coverage of the...

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3-step lesson, going into the life of machine learning

July 2, 2015
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3-step lesson, going into the life of machine learning

Automatic Machine Learning Introduction "I want to develop a model that automatically learns over time", a really challenging objective. We'll develop in this post a procedure that loads data,...

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An Update on Boosting with Splines

July 2, 2015
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An Update on Boosting with Splines

In my previous post, An Attempt to Understand Boosting Algorithm(s), I was puzzled by the boosting convergence when I was using some spline functions (more specifically linear by parts and...

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