Monthly Archives: April 2019

More General Weighted Binning

April 27, 2019
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You might be wondering what motivates me spending countless weekend hours on the MOB package. The answer is plain and simple. It is users that are driving the development work. After I published the wts_bin() function last week showing the impact of two-value weights on the monotonic binning outcome (https://statcompute.wordpress.com/2019/04/21/binning-with-weights), a question was asked if

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Quick Hit: Scraping javascript-“enabled” Sites with {htmlunit}

April 27, 2019
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Quick Hit: Scraping javascript-“enabled” Sites with {htmlunit}

I’ve mentioned {htmlunit} in passing before, but did not put any code in the blog post. Since I just updated {htmlunitjars} to the latest and greatest version, now might be a good time to do a quick demo of it. The {htmlunit}/{htmunitjars} packages make the functionality of the HtmlUnit Java libray available to R. The... Continue reading →

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Data Layout Exercises

April 27, 2019
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John Mount, Nina Zumel; Win-Vector LLC 2019-04-27 In this note we will use five real life examples to demonstrate data layout transforms using the cdata R package. The examples for this note are all demo-examples from tidyr/demo/, and are mostly based on questions posted to StackOverflow. They represent a good cross-section of data layout problems, … Continue reading Data...

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Setting up continuous multi-platform R package building, checking and testing with R-Hub, Docker and GitLab CI/CD for free, with a working example

April 27, 2019
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Setting up continuous multi-platform R package building, checking and testing with R-Hub, Docker and GitLab CI/CD for free, with a working example

Introduction In the previous post, we looked at how to easily automate R analysis, modeling, and development work for free using GitLab’s CI/CD. Together with the fantastic R-hub project, we can use GitLab CI/CD to do much more. In this post, we will take it to the next level by using R-hub to test our development work on many different platforms...

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A new image on DigitalOcean to start using RStudio Server without waiting more than 2 minutes

April 26, 2019
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At the end of the post there is a promotional link for free DigitalOcean credits. Motivation I initially made a close-access image for DigitalOcean because I wanted to spend my lectures and workshops giving useful examples and not solving software installation issues. Now you can use my RStudio image which available on DigitalOcean Marketplace, it costs $0 except for the cost...

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My favourite alternative to Excel dashboards

April 26, 2019
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My favourite alternative to Excel dashboards

Excel dashboards are great… what? 😯 For all the complaints that people have for Excel, it still has many clear, indisputable advantages. For one, it is extremely accessible - almost everyone has Excel installed on their computer. It’s familiar...

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A new image on DigitalOcean to start using RStudio Server without waiting more than 2 minutes

April 26, 2019
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At the end of the post there is a promotional link for free DigitalOcean credits. Motivation I initially made an close-access image for DigitalOcean because I wanted to spend my lectures and workshops giving useful examples and not solving software installation issues. Now you can use my RStudio image which available on DigitalOcean Marketplace, it costs $0 except for the cost...

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Robust measurement from a 2-way table

April 26, 2019
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I work in a university.  My department runs degree courses that allow students a lot of flexibility in their choice of course “modules”.  (A typical student takes 8 modules per year, and is assessed separately on each module). After the exams are finished each year, we promise our students to look carefully at the exam

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Frankfurt Data Science Meetup: Opening the Black Box

April 26, 2019
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Frankfurt Data Science Meetup: Opening the Black Box

We went to the Frankfurt Data Science Meetup where our Head of Data Science gave a talk about explainable AI. If you missed it, here are the main takeaways! Der Beitrag Frankfurt Data Science Meetup: Opening the Black Box erschien zuerst auf STATWORX.

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Checking reverse dependencies: the tiny way

April 26, 2019
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Checking reverse dependencies: the tiny way

The tools package that comes with base R makes checking reverse dependencies super easy. Build your package tarball (the pkg_x.y.z.tar.gz file). R CMD build /your/package/location It is a good idea to make sure that the tarball is in a dedicated … Continue reading →

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