Articles by Learning Machines

So, what is AI really?

February 12, 2019 | Learning Machines

One of the topics that is totally hyped at the moment is obviously Artificial Intelligence or AI for short. There are many self-proclaimed experts running around trying to sell you the stuff they have been doing all along under this new label. When you ask them what AI means you ... [Read more...]

Learning Data Science: Modelling Basics

February 5, 2019 | Learning Machines

Data Science is all about building good models, so let us start by building a very simple model: we want to predict monthly income from age (in a later post we will see that age is indeed a good predictor for income). For illustrative purposes we just make up some ... [Read more...]

Hash Me If You Can

January 29, 2019 | Learning Machines

We are living in the era of Big Data but the problem of course is that the bigger our data sets become the slower even simple search operations get. I will now show you a trick that is the next best thing to magic: building a search function that practically ... [Read more...]

If wealth had anything to do with intelligence…

January 23, 2019 | Learning Machines

…the richest man on earth would have a fortune of no more than $43,000! If you don’t believe me read this post! Have you ever thought about the distribution of wealth as a function of some quality? Especially rich people pride themselves on extraordinary abilities, so that they somehow “deserve” ... [Read more...]

Understanding the Magic of Neural Networks

January 15, 2019 | Learning Machines

Everything “neural” is (again) the latest craze in machine learning and artificial intelligence. Now what is the magic here? Let us dive directly into a (supposedly little silly) example: we have three protagonists in the fairy tail little red riding hood, the wolf, the grandmother and the woodcutter. They all ... [Read more...]

Clustering the Bible

December 27, 2018 | Learning Machines

During this time of year there is obviously a lot of talk about the Bible. As most people know the New Testament comprises four different Gospels written by anonymous authors 40 to 70 years after Jesus’ supposed crucifiction. Unfortunately we have lost all of the originals but only retained copies of copies ... [Read more...]

Your AI journey… and Happy Holidays!

December 20, 2018 | Learning Machines

I want to draw your attention to a very valuable (and short!) whitepaper from my colleague, Professor Andrew Ng, where he shares important insights on how to lead companies into the AI era. The five steps outlined in the paper are: Execute pilot projects to gain momentum Build an in-house ... [Read more...]

Intuition for principal component analysis (PCA)

December 6, 2018 | Learning Machines

Principal component analysis (PCA) is a dimension-reduction method that can be used to reduce a large set of (often correlated) variables into a smaller set of (uncorrelated) variables, called principal components, which still contain most of the information. PCA is a concept that is traditionally hard to grasp so instead ... [Read more...]

Why R for data science – and not Python?

December 2, 2018 | Learning Machines

There are literally hundreds of programming languages out there, e.g. the whole alphabet of one letter programming languages is taken. In the area of data science there are two big contenders: R and Python. Now why is this blog about R and not Python? I have to make a ... [Read more...]

OneR – fascinating insights through simple rules

November 25, 2018 | Learning Machines

We already saw the power of the OneR package in the preceding post. Here we want to give some more examples to gain some fascinating, often counter-intuitive, insights. Shirin Glander of Muenster University tested the OneR package with data from the World Happiness Report to find out what makes people ... [Read more...]

OneR – fascinating insights through simple rules

November 24, 2018 | Learning Machines

We already saw the power of the OneR package in the preceding post. Here we want to give some more examples to gain some fascinating, often counter-intuitive, insights. Shirin Glander of Muenster University tested the OneR package with data from the World Happiness Report to find out what makes people ... [Read more...]
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