18Jan/17

# Is Big Data Good or Evil?

Yesterday, Arthur Charpentier (@freakonometrics) and I joined the Eco Club at the Franco-American Institute (@IFArennes). We were kindly invited by Alice Bernard to talk about Big Data with the members of the club. It was really fun!

The slides that were projected during the presentation are available inside the post.

17Nov/16

# Where’s Waldo? Here he is!

Yesterday, I came across a nice article untitled “Here’s Waldo: Computing the optimal search strategy for finding Waldo“, written by Randal S. Olson. I used the data he shared to apply a correction to the kernel density estimation of Waldo’s location.

In this article, Randal explains that he has devoted some time to try to compute the optimal search strategy for finding Waldo. To that end, he has used some machine learning techniques.
From an image provided by Slate (Here’s Waldo, 2013, by Ben Blatt), Randal S. Olson retrieved the coordinates of 68 different locations of Waldo, and kindly shared the data afterwards.

[…]

30Oct/14

# Coordinates of “hot-spots”

Last week I uploaded a note about the paper @freakonometrics and I have submitted again after we added quite a few revisions. We have already made available most of the R code to reproduce our applications (on this GitHub repository). However, we did not share our method to obtain the coordinates of the “hot-spots” areas

22Oct/14

# Kernel Density Estimation with Ripley’s Circumferential Correction

This is it! The revised version of a paper written with Arthur Charpentier has been submitted yesterday! It is untitled “Kernel Density Estimation with Ripley’s Circumferential Correction”. The paper is available on https://hal.archives-ouvertes.fr/hal-00725090.

19Apr/14

# Maps with R

Last month, @freakonometrics posted a bunch of articles on his blog about the North pole (in French):

There are some maps on these articles that were produced using ggplot2 excellent package in R. We want to share our code here.

03Jan/14

# Tweet goes viral

To begin this new year, I had the pleasure to have some fun with R, Gephi and Twitter.