Sometimes the analytical power of built-in Hive functions is just not enough. In this case it is possible to write hand-tailored User-Defined Functions (UDFs) for transformations and even aggregations which are therefore called User-Defined Aggregation Functions (UDAFs). In this post we focus on how to write sophisticated UDFs and UDAFs …

This talk presented at the EuroPython 2016 introduces several Python libraries related to the handling of GPS data. The slides of this talk are available on Github or on nbviewer.

If you are doing probabilistic programming you are dealing with all kinds of different distributions. That means choosing an ensemble of right distributions which describe the underlying real-world process in a suitable way but also choosing the right parameters for prior distributions. At that point I often start visualizing the …

Often I get the question as a Data Scientist what the Python Data Science Stack actually is and where a beginner should start to learn. The Python ecosystem, especially around the topics such as data analytics, data mining, data science and machine learning is so vast and rich that it …

In this presentation given at the EuroPython 2015 in Bilbao, I show how the hangups library can be used in order to write a small chatbot that connects to Google Hangouts and reminds you or someone else to take his/her medication. The secure and recommended OAuth2 protocol is used …