Following an X validated question on how to simulate a multinomial with fixed average, W. Huber produced a highly elegant and efficient resolution with the compact R code tabulate(sample.int((k-1)*n, s-n) %% n + 1, n) + 1 where k is the number of classes, n the number of draws, and s ...

In this blog post I want to explore the EU regulation for average CO2 emissions of manufacturer’s car fleets using the EU data set of newly registered cars. The data was already studied on an aggregate level in my earlier post. Here we explore, in particular, the monetary implications ...

By Bob Hoyt & Bob Muenchen Data science is being used in many ways to improve healthcare and reduce costs. We have written a textbook, Introduction to Biomedical Data Science, to help healthcare professionals understand the topic and to work … Continue reading →

Background This post is going to talk about how to import Python classes into R, which can be done using a really awesome package in R called reticulate. reticulate allows you to call Python code from R, including sourcing Python scripts, using Python packages, and porting functions and classes. To ...

In the MAT7381 course (graduate course on regression models), we will talk about optimization, and a classical tool is the so-called conjugate. Given a function its conjugate is function such that so, long story short, is the maximum gap between the linear function and . Just to visualize, consider a simple ...

Update from March 21, 2020 I’ve been wanting to return to this post and make this map more interactive. As a matter of fact it was easier than I thought, I just never got around to doing it. I won’t be going through the code for the leaflet map below ...

Update from March 21, 2020 I’ve been wanting to return to this post and make this map more interactive. As a matter of fact it was easier than I thought, I just never got around to doing it. I won’t be going through the code for the leaflet map below ...

Update from March 21, 2020 I’ve been wanting to return to this post and make this map more interactive. As a matter of fact it was easier than I thought, I just never got around to doing it. I won’t be going through the code for the leaflet map below ...

A board game as Le weekly Monde current mathematical puzzle: 11 players in a circle and 365 tokens first owned by a single player. Players with at least two tokens can either remove one token and give another one left or move two right and one left. How quickly does the game ...

Northern Scotland broken GB December temperature records in 2019, how has time affected snow cover?

Sudoku is a classical logical game based on combinatorial number replacement puzzle. Objective is to to fill 9×9 matrix with digits so that each column, each row, and each box (3×3 sub-grid) of nine contain all of the digits from…Read more ›

H2O is the scalable, open-source Machine Learning library that features AutoML. Here are 5 Reasons why it's an essential library for creating production data science code. Full-Stack Data Science Series This is part of a series of articles on ...

The oil-to-gas ratio was recently at its highest level since October 2013, as Middle East saber-rattling and a recovering global economy supported oil, while natural gas remained oversupplied despite entering the major draw season. Even though the ratio has eased in the last week, it remains over one standard deviation above ...