We wrote a short tutorial on contast coding, covering the common contrast coding scenarios, among them: treatment, helmert, anova, sum, and sliding (successive differences) contrasts. The target audience is psychologists and linguists, but really it is for anyone doing planned experiments. The paper has not been submitted anywhere yet. We are keen to get user feedback before we...
In this exercise, we will continue to solve problems from the last exercise about GLM here. Therefore, the exercise number will start at 9. Please make sure you read...
I just came across a nice little post on acquiring and visualizing geodata in R using the Max Planck Institute of Ornithology as an example. It’s by the rOpenSci...
We are pleased and excited to announce that we are working on a second edition of Practical Data Science with R! Manning Publications has just announced the launching of...
Here is the course link. Course Description You've taken a survey (or 1000) before, right? Have you ever wondered what goes into designing a survey and how survey responses are turned...
The language used by data scientists can be confusing to anyone encountering it for the first time. Ever changing best practices and constantly evolving technologies and methodologies have given...
Last month, I was delighted to be invited to speak, along with Hadley Wickham, at the seventy-first meeting of the TokyoR user group in Tokyo, Japan. This day-long mini-conference...
An economist contacted me about the ability of simstudy to generate correlated ordinal categorical outcomes. He is trying to generate data as an aide to teaching cost-effectiveness analysis, and...
By Gabriel Vasconcelos and Yuri Fonseca We are happy to introduce our new machine learning method called Boosting Smooth Trees (BooST) (full article here). This model was a...
Microsoft R Open 3.5.1 has been released, combining the latest R language engine with multi-processor performance and tools for managing R packages reproducibly. You can download Microsoft R Open...
The data.table R package is really good at sorting. Below is a comparison of it versus dplyr for a range of problem sizes. The graph is using a log-log...
Introduction As part of our effort to provide users ways to replicate our analyses and improve their performance in fantasy football, we are continuously looking at ways we can...
This post is the 1st post of a series showcasing various rOpenSci packages as if Maëlle were a birder trying to make the most of R in general and rOpenSci in...
This week version 2.0 of the mongolite package has been released to CRAN. Major new features in this release include support for MongoDB 4.0, GridFS, running database commands, and...
This is a short post following the previous one (PCA revisited). In this post I’m going to apply PCA to a toy problem: the classification of faces. Again I’ll be...
The development version of splashr now support authenticated connections to Splash API instances. Just specify user and pass on the initial splashr::splash() call to use your scraping setup a...
A couple of months ago I blogged about consumer spending on vehicle fuel by income. The impetus for that post was the introduction on 1 July 2018 of...
I love Arkham Horror; The Card Game. I love it more than I really should;it's ridiculously fun. It's a cooperative card game where you build a deck representing a...
Model interpretability is critical to businesses. If you want to use high performance models (GLM, RF, GBM, Deep Learning, H2O, Keras, xgboost, etc), you need to learn how to...
A Deluge of Content Over the last two decades, the accessibility of media has increased dramatically. One of the main reasons for this surge in available content is the...
We are less than one month away from the R/Medicine conference! Tickets are still available to connect with the R users...
Principal component analysis (PCA) is a dimensionality reduction technique which might come handy when building a predictive model or in the exploratory phase of your data analysis. It is...
IRA Tweet Data You may have heard that two researchers at Clemson University analyzed almost 3 millions tweets from the Internet Research Agency (IRA) - a "Russian...
Ceteris Paribus package is a part of DALEX family of model explainers. Version 0.3 just gets to CRAN. It’s equipped with new functions for very elastic visual exploration of...
Visualising potential winners in the Scottish Championship - Last August, I was given a surprise gift of a season ticket to watch my local football...
The latest Redmonk Language Rankings are out. These rankings are published twice a year, and the top three positions in the June 2018 rankings remain unchanged from last time:...
A brand new release of RQuantLib, now at version 0.4.5, just arrived on CRAN, and will get to Debian shortly. This release re-enables Windows builds thanks to a...
Do you plan to upgrade your server installation from Ubuntu 16.04 to Ubuntu 18.04 LTS ? It is also the best time to migrate to R 3.5 ! By...
