Sampling the Twitter graph. Talk at CMStatistics 2015, London.
I will be talking at CMStatistics on Monday, December 14 about how sampling methods can be used to estimate statistics on Twitter’s graph. Sampling the Twitter graph from Antoine Rebecq
[Sports] Why 6% should be the golden number in professional cycling
Disclaimer : I don’t pretend to be a pro rider nor a sport doctor/physiologist, just a data scientist who sometimes likes to apply mathematical modeling to understand some real-world situations 🙂 Are all slopes only for lightweights ? I’m a bike enthusiast and I used to race (although I was far from being a champion!). I noticed during the training sessions among teammates that had approximately equivalent physical abilities than mine that our ways of performing were very different: every…
[Sampling] Why you should never ever use the word “representative” about survey sampling
We often hear the term “representative”, which supposedly assesses the quality of a sample. In this article, I’ll try to show you that not only “representative” has no scientific meaning, but also it is misleading, especially for people who are not survey sampling specialists. This includes students, researchers in social science who use surveys, journalists, etc. I hope I’ll convince you to never use it again ! I’ll try to make this post understandable even if you don’t know the…
[Games] Les mots les plus probables Ă “Des chiffres et des lettres”
Pour changer un peu, aujourd’hui, un post Ă©crit en français ! De temps Ă autres pendant mes congĂ©s, je prends le temps de regarder la cĂ©lèbre Ă©mission “Des chiffres et des Lettres”. Je m’assois devant ma tĂ©lĂ©vision avec une bonne tasse de thĂ© bien chaud, du papier et un crayon pour compter les points, et je tente de terminer avec le score le moins Ă©loignĂ© possible du vainqueur du jour. Sur la partie “Le compte est bon” (les chiffres, donc),…
[Science] Looking for a new holiday or When does day length increase the fastest?
We’re now in the midst of the winter (at least in the northern hemisphere). Our Parisian winter, although not very cold, is quite rainy and cloudy, and it always depresses me a little no to see the sun for several days… Fortunately, at this the time of the year, every next day we can experience more daylight, reminding us we’ve never been closer to the next summer! This made me wonder: when does the length of day increase the most?…