Dummy Is As Dummy Does

August 24, 2019
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In the 1975 edition of “Applied multiple regression/correlation analysis for the behavioral sciences” by Jacob Cohen, an interesting approach of handling missing values in numeric variables was proposed with the purpose to improve the traditional single-value imputation, as described below: – First of all, impute missing values by the value of mean or median –

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RcppExamples 0.1.9

August 24, 2019
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A new version of the RcppExamples package is now on CRAN. The RcppExamples package provides a handful of short examples detailing by concrete working examples how to set up...

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Visualizing the relationship between multiple variables

August 24, 2019
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Visualizing the relationship between multiple variables

Visualizing the relationship between multiple variables can get messy very quickly. This post is about how the ggpairs() function in the GGally package does this task, as well as...

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Inferring a continuous distribution from binned data by @ellis2013nz

August 24, 2019
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Inferring a continuous distribution from binned data by @ellis2013nz

Today’s post comes from an idea and some starting code by my colleague David Diviny from Nous Group. A common real-world problem is trying to estimate an unknown continuous variable...

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Changing the variable inside an R formula

August 23, 2019
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I recently encountered a situation where I wanted to run several linear models, but where the response variables would depend on previous steps in the data analysis pipeline. Let...

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Improvements to RSwitch in v1.3.0

August 23, 2019
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Improvements to RSwitch in v1.3.0

It’s only been a couple days since the initial version of my revamped take on RSwitch but there have been numerous improvements since then worth mentioning. For starters, there’s...

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Polyglot FizzBuzz in R (Plus: “Why Can’t Johnny Code?”)

August 23, 2019
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Polyglot FizzBuzz in R (Plus: “Why Can’t Johnny Code?”)

I caught this post on the The Surprising Number Of Programmers Who Can’t Program from the Hacker News RSS feed. Said post links to another, classic post on the...

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Pros and Cons of Top Data Science Online Courses

August 23, 2019
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Pros and Cons of Top Data Science Online Courses

There are a variety of data science courses online, but which one is the best? Find out the pros and cons of each! Coursera, EdX, etc These MOOCs have...

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Organize Why R? 2019 pre-meeting in your city

August 22, 2019
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Organize Why R? 2019 pre-meeting in your city

Why R? pre-meetings are R meetups that support local R groups. They promote Why R? 2019 Conference. The purpose of those meetings is to provide the space for the...

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Exploration of 3D Fractals

August 22, 2019
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Intro In an earlier post, I introduced a function to generate fractals based on regular polygons. In this post I explore doing the same in 3D. library(dplyr) library(plotly) library(RColorBrewer) Fractals in 3D In my previous...

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A Shiny App for JS Mediation

August 22, 2019
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A Shiny App for JS Mediation

Background This is a brief post about making my first Shiny App (see also). I made this app following a meeting of the Advancing Social Cognition lab (ASC-Lab) where we...

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‘mRpostman’ – IMAP Tools for R in a Tidy Way

August 22, 2019
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‘mRpostman’ – IMAP Tools for R in a Tidy Way

mRpostman is an R package to help you to easy connect to your IMAP (Internet Message Access Protocol) server and execute commands, such as listing mailboxes, searching and fetching...

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Quick Hit: A new 64-bit Swift 5 RSwitch App

August 22, 2019
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Quick Hit: A new 64-bit Swift 5 RSwitch App

At the bottom of the R for macOS Developer’s Page there’s mention of an “other binary” called “RSwitch” that is “a small GUI that allows you to switch between...

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So baut man Analytikplattformen – Teil 2: Intelligentes Benutzer- und Rollenkonzept

August 22, 2019
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So baut man Analytikplattformen – Teil 2: Intelligentes Benutzer- und Rollenkonzept

What does a modern analytics platform need to offer companies real added value? Why is the administration of user and role rights a factor not to be underestimated when...

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Rcpp now used by 1750 CRAN packages

August 21, 2019
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Rcpp now used by 1750 CRAN packages

Since this morning, Rcpp stands at just over 1750 reverse-dependencies on CRAN. The graph on the left depicts the growth of Rcpp usage (as measured by Depends, Imports...

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LondonR: Hadley Wickham & tidyverse’s greatest hits

August 21, 2019
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LondonR: Hadley Wickham & tidyverse’s greatest hits

Meeting Hadley! Last Monday, I had the pleasure of attending a talk given by Hadley Wickham at LondonR, which was held at one of their usual venues at the UCL...

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Calculating Always-Valid p-values in R

August 21, 2019
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Calculating Always-Valid p-values in R

In this post, we will develop a framework for always-valid inference based on the paper Always Valid Inference: Continuous Monitoring of A/B Tests (2019 Johari, Pekelis, Walsh). Using an...

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Detecting outlier samples in PCA

August 21, 2019
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Detecting outlier samples in PCA

In this post, I present something I am currently investigating (feedback welcome!) and that I am implementing in my new package {bigutilsr}. This package can be used to detect...

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How to do Topic Extraction from Customer Reviews in R

August 21, 2019
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How to do Topic Extraction from Customer Reviews in R

Topic Extraction is an integral part of IE (Information Extraction) from Corpus of Text to understand what are all the key things the corpus is talking about. While this...

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EARL London – speaker interview, Johannes Tang Kristensen

August 21, 2019
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We sent Johannes Tang Kristensen from Arla Foods a few questions about his upcoming talk at EARL London – ‘How much milk do our cows produce? Lessons learned from...

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Which Factors Influence Gas Prices? Do Gas Companies Narratives Hold True?

August 21, 2019
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Which Factors Influence Gas Prices? Do Gas Companies Narratives Hold True?

What are driving factors behind the gas price? With freely accessible data we are goging to find out if the brand, the location and more have any impact on...

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Why R? 2019 – Agenda Released + Regular Registration Ends Aug 31st!

August 20, 2019
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Why R? 2019 – Agenda Released + Regular Registration Ends Aug 31st!

A month ago we closed Call for Papers for Why R? 2019 Conference. Today we are pleased to announce the agenda! From over 75 submissions (from 4 continents) we...

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Geographic projections and transformations

Geographic projections and transformations

Introduction This workbook outlines key concepts and functions related to map projections — also referred to as coordinate reference systems (CRSs) — and transformation of geographic data from one projection...

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Visualizing Soccer with StatsBomb Data and R, Part 1: Simple xG and Pass Partner Plots!

August 20, 2019
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Visualizing Soccer with StatsBomb Data and R, Part 1: Simple xG and Pass Partner Plots!

This will be Part 1 of what I hope...

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Notes on Becoming an RStudio Certified Trainer

August 20, 2019
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Notes on Becoming an RStudio Certified Trainer

I recently became an RStudio Certified Trainer, and thought that it might interest the broader R Community to learn about this new program. For those who don’t know, RStudio...

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How to Use CSS to Style Your R Shiny Projects

August 20, 2019
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How to Use CSS to Style Your R Shiny Projects

I hope you will give me 7 minutes to convince you why CSS is a good thing, and why you should be using it in your projects. In this...

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Modern reporting for R with Dash

August 19, 2019
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Modern reporting for R with Dash

Creating an effective, informative, and aesthetically appealing report to showcase your data can be tedious: it’s often difficult to display your data and your plots together in an uncluttered...

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How to get an AUC confidence interval

August 19, 2019
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How to get an AUC confidence interval

Background AUC is an important metric in machine learning for classification. It is often used as a measure of a model’s performance. In effect, AUC is a measure between...

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RcppQuantuccia 0.0.3

August 19, 2019
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A maintenance release of RcppQuantuccia arrived on CRAN earlier today. RcppQuantuccia brings the Quantuccia header-only subset / variant of QuantLib to R. At the current stage, it mostly offers...

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