Posts Tagged ‘ R ’

Datashader is a big deal

March 22, 2017
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Datashader is a big deal

I recently got back from Strata West 2017 (where I ran a very well received workshop on R and Spark). One thing that really stood out for me at the exhibition hall was Bokeh plus datashader from Continuum Analytics. I had the privilege of having Peter Wang himself demonstrate datashader for me and answer a … Continue reading Datashader is a big deal

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Data validation with the assertr package

March 20, 2017
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Data validation with the assertr package

Version 2.0 of my data set validation package assertr hit CRAN just this weekend. It has some pretty great improvements over version 1. For those new to the package, what follows is a short and new introduction. For those who… Continue reading →

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Practical Data Science with R: ACM SIGACT News Book Review and Discount!

March 19, 2017
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Practical Data Science with R: ACM SIGACT News Book Review and Discount!

Our book Practical Data Science with R has just been reviewed in Association for Computing Machinery Special Interest Group on Algorithms and Computation Theory (ACM SIGACT) News by Dr. Allan M. Miller (U.C. Berkeley)! The book is half off at Manning form March 21st 2017 using the following code (please share/Tweet): Deal of the Day … Continue reading Practical Data Science with R: ACM SIGACT News Book Review and Discount!

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Practical Data Science with R: ACM SIGACT News Book Review and Discount!

March 19, 2017
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Practical Data Science with R: ACM SIGACT News Book Review and Discount!

Our book Practical Data Science with R has just been reviewed in Association for Computing Machinery Special Interest Group on Algorithms and Computation Theory (ACM SIGACT) News by Dr. Allan M. Miller (U.C. Berkeley)! The book is half off at Manning March 21st 2017 using the following code (please share/Tweet): Deal of the Day March … Continue reading Practical Data Science with R: ACM SIGACT News Book Review and Discount!

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what does more efficient Monte Carlo mean?

March 16, 2017
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what does more efficient Monte Carlo mean?

“I was just thinking that there might be a magic trick to simulate directly from this distribution without having to go for less efficient methods.” In a simple question on X validated a few days ago [about simulating from x²φ(x)] popped up the remark that the person asking the question wanted a direct simulation method […]

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Ensemble Methods are Doomed to Fail in High Dimensions

March 15, 2017
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Ensemble Methods are Doomed to Fail in High Dimensions

Ensemble methods By ensemble methods, I (Bob, not Andrew) mean approaches that scatter points in parameter space and then make moves by inteprolating or extrapolating among subsets of them. Two prominent examples are: Ter Braak’s differential evolution   Goodman and Weare’s walkers There are extensions and computer implementations of these algorithms. For example, the Python […] The post Ensemble Methods are Doomed to Fail in High Dimensions appeared first on…

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New screencast: using R and RStudio to install and experiment with Apache Spark

March 15, 2017
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I have new short screencast up: using R and RStudio to install and experiment with Apache Spark. More material from my recent Strata workshop Modeling big data with R, sparklyr, and Apache Spark can be found here.

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New version of imager package for image processing

March 15, 2017
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New version of imager package for image processing

A new version of imager is now available on CRAN. This release brings a lot of new features, including a whole new set of functions dealing with pixel sets, better support for videos, new and faster reduction functions. The most significant change is the introduction of a “pixset” class, which deals with sets of pixels […]

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Peter Lee (1940?-2017)

March 11, 2017
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Peter Lee (1940?-2017)

Just heard the sad news that Peter Lee, British Bayesian and author of Bayesian Statistics: An Introduction, has passed away yesterday night. While I did not know him, I remember meeting him at a few conferences in the UK and spending an hilarious evening at the pub. When the book came out, I thought it […]

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Peter Lee (1940?-2017)

March 11, 2017
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Peter Lee (1940?-2017)

Just heard the sad news that Peter Lee, British Bayesian and author of Bayesian Statistics: An Introduction, has passed away yesterday night. While I did not know him, I remember meeting him at a few conferences in the UK and spending an hilarious evening at the pub. When the book came out, I thought it […]

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