Articles by Learning Machines

Collider Bias, or: Are Hot Babes Dim and Eggheads Ugly?

March 24, 2020 | Learning Machines

Correlation and its associated challenges don’t lose their fascination: most people know that correlation doesn’t imply causation, not many people know that the opposite is also true (see: Causation doesn’t imply Correlation either) and some know that correlation can just be random (so-called spurious correlation). If you ... [Read more...]

COVID-19: The Case of Germany

March 17, 2020 | Learning Machines

It is such a beautiful day outside, lot’s of sunshine, spring at last… and we are now basically all grounded and sitting here, waiting to get sick. So, why not a post from the new epicentre of the global COVID-19 pandemic, Central Europe, more exactly where I live: Germany?! ... [Read more...]

Business Case Analysis with R (Guest Post)

January 14, 2020 | Learning Machines

Learning Machines proudly presents a fascinating guest post by decision and risk analyst Robert D. Brown III with a great application of R in the business and especially startup-arena! I encourage you to visit his blog too: Thales’ Press. Have fun! Introduction While Excel remains the tool of choice among ... [Read more...]

Painting Santa with Letters

December 17, 2019 | Learning Machines

After my little rant (which went viral!) about the tidyverse from last week, we are going to do a little fun project in the 50’th ???? post of this blog: ASCII Art! If you want to have some fun by painting with letters (i.e. ASCII characters) in R and get ... [Read more...]

Why I don’t use the Tidyverse

December 10, 2019 | Learning Machines

There seems to be some revolution going on in the R sphere… people seem to be jumping at what is commonly known as the tidyverse, a collection of packages developed and maintained by the Chief Scientist of RStudio, Hadley Wickham. In this post, I explain what the tidyverse is and ... [Read more...]

Create realistic-looking Islands with R

December 3, 2019 | Learning Machines

Modern movies use a lot of mathematics for their computer animations and CGI effects, one of them is what is known under the name fractals. In this post, we will use this technique to create islands with coastlines that look extraordinarily realistic. If you want to do that yourself read ... [Read more...]

Teach R to see by Borrowing a Brain

November 12, 2019 | Learning Machines

It has been an old dream to teach a computer to see, i.e. to hold something in front of a camera and let the computer tell you what it sees. For decades it has been exactly that: a dream – because we as human beings are able to see, we ... [Read more...]

Data Science on Rails: Analyzing Customer Churn

November 5, 2019 | Learning Machines

Customer Relationship Management (CRM) is not only about acquiring new customers but especially about retaining existing ones. That is because acquisition is often much more expensive than retention. In this post, we learn how to analyze the reasons of customer churn (i.e. customers leaving the company). We do this ... [Read more...]

Extracting basic Plots from Novels: Dracula is a Man in a Hole

October 29, 2019 | Learning Machines

In 1965 the University of Chicago rejected Kurt Vonnegut’s college thesis, which claimed that all stories shared common structures, or “shapes”, including “Man in a Hole”, “Boy gets Girl” and “Cinderella”. Many years later the then already legendary Vonnegut gave a hilarious lecture on this idea – before continuing to read ... [Read more...]

Finding free science books from Springer

October 15, 2019 | Learning Machines

Today the biggest book fair of the world starts again in Frankfurt, Germany. I thought this might be a good opportunity to do you some good! Springer is one of the most renowned scientific publishing companies in the world. Normally, their books are quite expensive but also in the publishing ... [Read more...]
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