OverviewIn this post, I would like to introduce my new R package GLMMadaptive for fitting mixed-effects models for non-Gaussian grouped/clustered outcomes using marginal maximum likelihood.Admittedly, there is a number of packages available for fitting...
Updates I’ve made small updates to two of my R packages on CRAN: ggseas (seasonal adjustment on the fly for ggplot2 graphics) and Tcomp (tourism forecasting competition data). Neither of the packages changes in a noticeable way for most users. The ggseas update is to get it ready for the coming release of ggplot2 2.3.0 scheduled for the end of...
R, Julia, Python – todays data scientists have the choice between numerous different programming languages, each with their own strengths and weaknesses. Would it not be convenient to bring those languages together and use the individual strength of each language? The package “reticulate” for R takes a step in this direction. The reticulate package creates … „reticulate – another...
“The way to change the world is through individual responsibility and taking local action in your own community.” – Jeff Bridges Over the past few years, R’s adoption has grown rapidly throughout the world. Much of it can be attributed to the growth of ‘data science’ as a domain. But R’s popularity primarily exists because of its amazing community...
Introduction Deducer is a free and open source Graphical User Interface for the R software, one that provides beginners a way to point-and-click their way through analyses. It also integrates into an environment designed to help programmers be more productive. … Continue reading →
Emacs is the swiss-army chainsaw of software, the ultimate killer app. This article explains the basics of using R with Emacs and ESS. Continue reading → The post Using R with Emacs and ESS appeared first on The Devil is in the Data.
Rare events are often of interest in statistics and machine learning. Mortality caused by a prescription drug may be uncommon but of great concern to patients, providers, and manufacturers. Predictive models in finance may be focused on forecasting when equities move substantially, something quite rare relative to the more quotidian shifts in prices. Logistic-type models (logit models in econometrics,...
The World Cup starts today! The tournament which runs from June 14 through July 15 is probably the most popular sporting event in the world. if you are a soccer fan, you know that learning about the players and their teams and talking about it all with your friends greatly enhances the experience. In this post, I will show...
Provided different probability distributions, animate independent sample distributions to demonstrate mode variability. There is a thorough code description with some subtle tips and tricks. Prologue Not so long time ago I encountered the following task: given several groups of samples (one group - several samples from one distribution) make a visual...
Introduction I never thought that I’d be programming software in my career. I started using R a little over 2 years now and it’s been one of the most important decisions in my career. Secluded in a small academic office with no one to discuss/interact about my new hobby, I started searching the web for tutorials and packages. After getting to know how amazing...
A couple of weeks ago I wrote a blog post about slopegraphs. There was some polite interest and it was a good chance to practice my functional programming skills so I decided to see if I could make a decent R function from what I had learned. It’s in pretty good shape so I just pushed an update to...
Abstract A good understanding of the statistical procedure used to calculate trisomy 21 (Down syndrome) risk in combined first trimester screening is a precondition for taking an informed decision on how to proceed with the screening results. For this purpose we implement the Fetal Medicine Foundation (FMF) Germany procedure described in Merz et al. (2016). To allow soon-to-become-parents an insight...
The larger and more complex the business the more metrics and dimensions. One day you understand that it is impossible to track them with only your eyes.The larger and more complex the business the more metrics and dimensions. One day you understand that it is impossible to track them with only your eyes. Reducing the The post Anomaly Detection...
In this post, I will illustrate the use of prediction intervals for the comparison of measurement methods. In the example a new spectral method for measuring whole blood hemoglobin is compared with a reference method. First, let’s start with discussing the large difference between a confidence interval and a prediction interval. Prediction interval versus Confidence The post Comparing methods...
On Monday, we learned about a serious issue with the installer for Microsoft R Open on Linux-based systems. (Thanks to Norbert Preining for reporting the problem.) The issue was that the installation and de-installation scripts would modify the system shell, and did not use the standard practices to create and restore symlinks for system applications. The Microsoft R team...
Tuesday, we got our conference “Insurance, Actuarial Science, Data & Models” and Dylan Possamaï gave a very interesting concluding talk. In the introduction, he came back briefly on a nice discussion we usually have in economics on the kind of model we should consider. It was about optimal control. In many applications, we start with a one period economy,...
The R package wrapr 1.5.0 is now available on CRAN. wrapr includes a lot of tools for writing better R code: let() (let block) %.__% (dot arrow pipe) build_frame() / draw_frame() ( data.frame builders and formatters ) qc() (quoting concatenate) := (named map builder) %?% (coalesce) NEW! %.|% (reduce/expand args) NEW! uniques() (safe unique() replacement) … Continue reading wrapr...
Code for fun I feel passionately that anyone can learn some coding but many feel they lack natural aptitude for it. One of the things I always try to stress to those I am teaching is that it matters very much less what you do than that do you it. It doesn’t matter how small… Continue reading Fun and...
This report describes an application of the ‘rasterize’ package for R. We rasterize (just) the line segments of two chromatograms in order to render one ...
An introduction to the Data + Art STEAM project with Forest Hill Junior and Senior Public School in Toronto!
Movie Browser is here to help you discover new movies to watch, in a lot of different ways. You’ll be able to browse everything from new movies, Documentaries and TV shows, to the best movies in the 1970's. The app lets you see the Critics, IMDB and Audience score of all feature films, TV shows
In a previous post, we reviewed how to set up and run a Monte Carlo (MC) simulation of future portfolio returns and growth of a dollar. Today, we will run that simulation many, many, times and then visualize the results. Our ultimate goal is to build a Shiny app that allows an end user to build a custom portfolio, simulate...
This afternoon, I was looking over some simulations I plan to use in an upcoming lecture on multilevel models. I created these examples a while ago, before I started this blog. But since it was just about a year ago that I first wrote about this topic (and started the blog), I thought I’d post this now to mark...
I recently discovered the R Graph Gallery, where users can share the beautiful visualizations they've created using R and its various libraries (especially ggplot2). One of my favorite parts about this gallery is a section called Art From Data, in whic...
Given that the UEFA Champion League final a few weeks ago between Real Madrid and Liverpool is the only match I’ve watched properly in over ten years, how dare I presume I can guess that Brazil is going to lift the trophy in the 2018 FIFA World Cup? Well, here goes… By the way, if you find the below...
The Fantasy Football Analytics API allows developers to programmatically access our data in JSON format. Users must pay for a standalone subscription to obtain a unique API key granting access. The post API Instructions appeared first on Fantasy Football Analytics.
Ava Yang, Data Scientist Given that the UEFA Champion League final a few weeks ago between Real Madrid and Liverpool is the only match I've watched properly in over ten years, how dare I presume I can guess that Brazil is going to lift the trophy in the 2018 FIFA World Cup? Well, here goes... By the way, if you find...
Point-and-click graphical user interfaces (GUIs) for R allow people to analyze data using the R software, without having to learn how to program in the R language. This is a brief look at how popular each one is. Knowing … Continue reading →
- It is with great pleasure that I announce the second edition of the portuguese version of my book, Processing and Analyzing Financial Data with R. This edition updates the material significantly. The portuguese version is now not only in par with the international version of the book, but...
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