But not this time… — I only recently learnt how to code in Python. Or should I say to code at all? I still consider myself a Python newbie, and I even doubt I will ever fully master it when I see how many things I learn every time I code. But on the other…

From A to Z — 0 — The Data import numpy as np import pandas as pd import seaborn as sns df = sns.load_dataset('tips') df

No Pun Intended — In Machine Learning, being able to calculate distances is essential in a lot of cases. The most obvious use for it is when dealing with spatial data, but it also is one of the easiest ways to assess membership/similarity in supervised and unsupervised techniques. K-Nearest Neighbours relies on distances between…

There is a lot of decisions to make during an A/B test; most of them are made during the conception stage. In this article, I am going to focus on the steps following the data collection stage. You will not hear about sample size nor power in this article (or…

iPython flavoured — Jupyter notebooks are incredibly powerful to develop ideas quickly, then share them if need be. The notebooks run in a web browser, and support many languages out of the box (Jupyter actually stands for Julia, Python and R, when it does not refer to Galileo’s notebook). You can dynamically code…

Git is a lot of things. But one of the things I like the most about it is that it can be so painful to use, it is funny (as long as I am not the victim). From the classic XKCD comic to the Git Koans, I find those very…

You are here! — Recently, I have been doing a lot more work on data that have a spatial meaning. Lucky for me, I have always been interested in GIS and, in my professional life, I have used a lot of GIS packages such as ArcGIS, MapInfo, and qGIS. But this time, as the…

Focussing your efforts to understand the bigger picture — Imagine you want to know which candidate will win the next election. Ideally, you conduct a census, and you ask every single person in the country up to two questions: Will you vote next elections? And if the answer is yes: Who are you voting for? You expect some people…

Recursive Functions in Python — You might not realise this, but recursions are very common. A lot of well-known acronyms are recursive, for example: Do you know what VISA (as in the VISA card in your wallet) stands for? It is the acronym for “Visa International Service Association”. Maybe you are familiar with YAML files…