Big news: RcppTOML now works on Windows too! This package had an uneventful 2016 without a single update. Release 0.0.5 had come out in late 2015 and we had no bugs or issues to fix. We use the package daily in production: a key part of our parameterisation is in TOML files In ... [Read more...]

Introduction Last week I was playing with creating maps using R and GGPLOT2. As I was learning I realized information about creating maps in ggplot is scattered over the internet. So here I combine all that knowledge. So if something is absolutel... [Read more...]

This blog post is about my recently released package on CRAN, textTinyR. The following notes and examples are based mainly on the package Vignette. The advantage of the textTinyR package lies in its ability to process big text data files in ... [Read more...]

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In this post I'm going to be talking about how to easily modify your Pelican blog configuration to let you directly publish blog posts using RMarkdown. I'm assuming you already have a Pelican blog set up, so I won't be covering that in today's post. If you're interested but haven't ... [Read more...]

Similar to the two-group linear discriminant analysis for classification case, LDA for classification into several groups seeks to find the mean vector that the new observation is closest to and assign accordingly using a distance function. The several group case also assumes equal covariance matrices amongst the groups . LDA... The ... [Read more...]

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[Une version francaise de cette article est disponible ici] This year (2017) we will have our presidential election between April and May in France. A while ago I discovered the open data website of the French government publishing public data with free access and promoting utilization by anyone. So in this ... [Read more...]

Previously in this series: The beta distribution Empirical Bayes estimation Credible intervals The Bayesian approach to false discovery rates Bayesian A/B testing Beta-binomial regression Understanding empirical Bayesian hierarchical modeling Mixture models and expectation-maximization We’ve introduced a number of statistical techniques in this series: estimating a beta prior, beta-binomial ... [Read more...]

This is a continuation of the intermediate decision tree exercise. Answers to the exercises are available here. If you obtained a different (correct) answer than those listed on the solutions page, please feel free to post your answer as a comment on that page. Exercise 1 use the predict() command to ... [Read more...]

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A few weeks back I posted an article looking at the biggest values of the 2016 fantasy season through week 13. Now that the season is over, let’s rerun the analysis and see what happens.The methodology is the same as before. Simply taking the ratio of the average draft position (... [Read more...]

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One of the very first learning algorithms that you’ll encounter when studying data science and machine learning is least squares linear regression. Linear regression is one of the easiest learning algorithms to understand; it’s suitable for a wide array of problems, and is already implemented in many programming ... [Read more...]

Solution to Euler Problem 6: Sum Square Difference in the R language for statistical computing. Continue reading → The post Euler Problem 6: Sum Square Difference appeared first on The Devil is in the Data. [Read more...]

Making packages is a great way to organize R code, whether it’s a set of scripts for personal use, a set of functions for internal company use or a lab group, or to distribute your new cool framework foobar to the masses. There's a number of guides to writing ... [Read more...]

R has long ago stopped to be a language only for statistical analysis. It’s also a great tool for communicating the results of data scientist’s work. With RMarkdown and Shiny it’s very easy to quickly design great reports and applications. We want to share few tricks to ... [Read more...]

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Last week all the rstatsosphere see the beautiful Timo Grossenbacher work. The last month, yep, the past year I’ve working on create maps easily with highcharter. When I saw this chart I took as challege to replicate this nice map in using... [Read more...]

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