Category Archives: R Language

Installing R on Windows 11

Posted on April 15, 2022 by jamesdmccaffrey

I was working on a machine learning project and needed to use R. R is a library of thousands of classical statistics functions plus a scripting language. My company’s IT department upgraded one of my laptops from Windows 10 to … Continue reading →

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A Neural Network using Raw R Language Code

Posted on September 2, 2017 by jamesdmccaffrey

I decided to spin up a neural network demo program, using raw R language code. R is a language that’s quite unlike the others I use — mostly C#, Java, Python, and JavaScript — so it’s important for me to … Continue reading →

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“R Programming Succinctly” – Free e-Book

Posted on June 12, 2017 by jamesdmccaffrey

A book I wrote, “R Programming Succinctly” was published on June 5, 2017. See https://www.syncfusion.com/resources/techportal/details/ebooks/R-Programming_Succinctly. The R language is, arguably, the default, open source language for Data Science. My e-book describes how to write R language programs, as opposed to … Continue reading →

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R Language OOP using the S4 Model

Posted on May 4, 2017 by jamesdmccaffrey

I wrote an article in the April 2017 issue of Visual Studio Magazine that explains R language OOP using the so-called S4 model. See https://visualstudiomagazine.com/articles/2017/04/01/r-s4-demo.aspx. OOP in the R language is very different from OOP in general purpose languages such … Continue reading →

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Factor Analysis using R

Posted on March 19, 2017 by jamesdmccaffrey

I wrote an article in the March 2017 issue of Visual Studio Magazine titled “Revealing Secrets with R and Factor Analysis”. See https://visualstudiomagazine.com/articles/2017/03/01/revealing-secrets-r-factor-statistics.aspx. Factor Analysis is a classical statistics technique that analyzes data to determine if some set of observed … Continue reading →

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Data Clustering using R

Posted on February 8, 2017 by jamesdmccaffrey

I wrote an article titled “Data Clustering using R” in the February 2017 issue of Visual Studio Magazine. See https://visualstudiomagazine.com/articles/2017/02/01/data-clustering-using-r.aspx. Data clustering is the process of programmatically grouping data so that similar items belong together. For example, suppose you have … Continue reading →

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The 2017 Visual Studio Live Conference is Coming Up

Posted on February 1, 2017 by jamesdmccaffrey

The 2017 Visual Studio Live conference will be held from Monday, March 13 through Friday, March 17 in Las Vegas. See http://www.vslive.com. VS Live is one of my three favorite events for software engineers who use Microsoft technologies. And overall, … Continue reading →

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R Language OOP using S3

Posted on January 23, 2017 by jamesdmccaffrey

I wrote an article titled “R Language OOP using S3” in the January 2017 issue of Visual Studio Magazine. See https://visualstudiomagazine.com/articles/2017/01/01/r-language-oop-using-s3.aspx. The R language has been around for decades and is used mostly for interactive data analysis. For example, you … Continue reading →

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Factor Analysis

Posted on December 29, 2016 by jamesdmccaffrey

Factor analysis is a classical statistics technique that isn’t used too much in machine learning but it can be quite valuable. As is often the case with statistics and ML, it’s a bit tricky to explain what factor analysis is … Continue reading →

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Logistic Regression using R

Posted on December 8, 2016 by jamesdmccaffrey

I wrote an article titled “Logistic Regression using R” in the December 2016 issue of Visual Studio Magazine. See https://visualstudiomagazine.com/articles/2016/12/01/logistic-regression-using-r.aspx. I consider logistic regression to be more-or-less the “Hello World” basic example of machine learning. Logistic regression is used in … Continue reading →

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