Galton’s board all askew

November 19, 2019
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Galton’s board all askew

Since Galton’s quincunx has fascinated me since the (early) days when I saw a model of it as a teenager in an industry museum near Birmingham, I jumped on the challenge to build an uneven nail version where the probabilities to end up in one of the boxes were not the Binomial ones. For instance, 

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A baby named Al*

November 19, 2019
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A baby named Al*

Make a plot of a list of baby name popularity.

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Debugging in R: How to Easily and Efficiently Conquer Errors in Your Code

November 19, 2019
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Debugging in R: How to Easily and Efficiently Conquer Errors in Your Code

When you write code, you’re sure to run into problems from time to time. Debugging...

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Learning R: Data Wrangling in Password Hacking Game

November 19, 2019
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Learning R: Data Wrangling in Password Hacking Game

Data Scientists know that about 80% of a Data Science project consists of preparing the data so that they can be analyzed. Building Machine Learning models is the fun...

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Hangman game with R

November 19, 2019
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Hangman game with R

Hangman is a classic word game in which you need to need to guess as many possible letters in word, so you can guess the word, before running out...

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ttdo 0.0.4: Extension

November 18, 2019
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ttdo 0.0.4: Extension

A first update release to the still very new (and still very small) ttdo package arrived on CRAN today. Introduced about two months ago in September, the ttdo...

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Customer Churn Modeling using Machine Learning with parsnip

November 17, 2019
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Customer Churn Modeling using Machine Learning with parsnip

This article comes from Diego Usai, a student in Business Science University. Diego has completed both 101 (Data Science Foundations) and 201 (Advanced Machine Learning & Business Consulting)...

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October 2019: “Top 40” New R Packages

November 17, 2019
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October 2019: “Top 40” New R Packages

Two Hundred twenty-three new packages made it to CRAN in October. Here are my “Top 40” picks in ten categories: Computational Methods, Data, Genomics, Machine Learning, Mathematics, Medicine, Pharmacology,...

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Our first artist in residence: Allison Horst!

November 17, 2019
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Our first artist in residence: Allison Horst!

I’m very excited to announce that Allison Horst is RStudio’s inaugural artist-in-residence. Allison is one of my favourite artists in the R community. Over the next year, she’s going...

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Eigenvectors from Eigenvalues – a NumPy implementation

November 17, 2019
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Eigenvectors from Eigenvalues – a NumPy implementation

I was intrigued by the recent splashy result showing how eigenvectors can be computed from eigenvalues alone. The finding was covered in Quanta magazine and the original paper is...

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Using R: From gather to pivot

November 17, 2019
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Since version 1.0.0, released in September, the tidyr package has a new replacement for the gather/spread pair of functions, called pivot_longer/pivot_wider. (See the blog post about the release. It...

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Quicker knitr kables in RStudio notebook

November 16, 2019
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Quicker knitr kables in RStudio notebook

The setup The RStudio notebook is a great interactive tool to build a statistical report. Being able to see statistics and graphs right on the fly probably has saved...

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RcppEigen 0.3.3.7.0

November 16, 2019
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A new minor release 0.3.3.7.0 of RcppEigen arrived on CRAN today (and just went to Debian too) bringing support for Eigen 3.3.7 to R. This release comes almost a...

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My R Style Guide

November 15, 2019
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My R Style Guide

This is my take on an R style guide. As such, this is going to be a very long post (long enough to warrant a table of content). Still,...

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Practical Data Science with R, 2nd Edition, IS OUT!!!!!!!

November 15, 2019
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Practical Data Science with R, 2nd Edition, IS OUT!!!!!!!

Practical Data Science with R, 2nd Edition author Dr. Nina Zumel, with a fresh author’s copy of her book!

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The hidden diagnostic plots for the lm object

November 14, 2019
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The hidden diagnostic plots for the lm object

When plotting an lm object in R, one typically sees a 2 by 2 panel of diagnostic plots, much like the one below: This link has an excellent explanation...

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Gold-Mining Week 11 (2019)

November 14, 2019
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Week 11 Gold Mining and Fantasy Football Projection Roundup now available. The post Gold-Mining Week 11 (2019) appeared first on Fantasy Football Analytics.

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IPO Exploration Part Two

November 13, 2019
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In a previous post, we explored IPOs and IPO returns by sector and year since 2004. Today, let’s investigate how portfolios formed with those IPOs have performed. We will...

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workloopR: Analysis of work loops and other data from muscle physiology experiments in R

workloopR: Analysis of work loops and other data from muscle physiology experiments in R

Studies of muscle physiology often rely on closed-source, proprietary software for not only recording data but also for data wrangling and analyses. Although specialized software might be necessary to...

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Machine Learning in R: Start with an End-to-End Test

November 13, 2019
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Machine Learning in R: Start with an End-to-End Test

As a data scientist, you will likely be asked one day to automate your analysis and port your models to production environments. When that happens you cross the blurry...

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Durban EDGE DataQuest

November 12, 2019
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Durban EDGE DataQuest

The Durban EDGE (Economic Development and Growth in eThekwini) DataQuest was held at UKZN (Westville Campus) on 13 November 2019. Participants were tasked with creating something interesting and useful...

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The Colour of Everything

November 12, 2019
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The Colour of Everything

I’m happy to announce that farver 2.0 has landed on CRAN. This is a big release comprising of a rewrite of much of the internals along with a range of...

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Automating update of a fiscal database for the Euro Area

November 12, 2019
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Automating update of a fiscal database for the Euro Area

Our purpose is to write a program to automatically update a quarterly fiscal database for the Euro Area. The main difficulty of this exercise is to build long series...

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When Cross-Validation is More Powerful than Regularization

November 12, 2019
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When Cross-Validation is More Powerful than Regularization

Regularization is a way of avoiding overfit by restricting the magnitude of model coefficients (or in deep learning, node weights). A simple example of regularization is the use of...

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Logistic Regression in R: A Classification Technique to Predict Credit Card Default

November 12, 2019
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Logistic Regression in R: A Classification Technique to Predict Credit Card Default

Logistic Regression is one of the most popular classification techniques. In this sneak peek from Data Science Dojo's bootcamp, you'll learn about this popular algorithm and go through a...

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AzureR updates: AzureStor, AzureVM, AzureGraph, AzureContainers

November 12, 2019
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Some major updates to AzureR packages this week! As well as last week's AzureRMR update, there are changes to AzureStor, AzureVM, AzureGraph and AzureContainers. All of these are live...

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Azure AI and Machine Learning talk series

November 12, 2019
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Azure AI and Machine Learning talk series

At last week's Microsoft Ignite conference in Orlando, our team delivered a series of 6 talks about AI and machine learning applications with Azure. The videos from each talk...

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My AP Statistics Class First R Programming Assignment Using RStudio

November 12, 2019
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My AP Statistics Class First R Programming Assignment Using RStudio

My AP Stats class has started their first R programming assignment this week. I gave them the code for them to type in and play with. This will give...

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RcppAnnoy 0.0.14

November 12, 2019
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RcppAnnoy 0.0.14

A new minor release of RcppAnnoy is now on CRAN, following the previous 0.0.13 release in September. RcppAnnoy is the Rcpp-based R integration of the nifty Annoy library by...

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