2018

A deep dive into glmnet: penalty.factor

November 13, 2018 | kjytay

The glmnet function (from the package of the same name) is probably the most used function for fitting the elastic net model in R. (It also fits the lasso and ridge regression, since they are special cases of elastic net.) … Continue reading →
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Installing RStudio & Shiny Servers

November 12, 2018 | R | datawookie

I did a remote install of Ubuntu Server today. This was somewhat novel because it’s the first time that I have not had physical access to the machine I was installing on. The server install went very smoothly indeed. The next tasks were to install RStudio Server and Shiny ... [Read more...]

Installing RStudio & Shiny Servers

November 12, 2018 | R on datawookie

I did a remote install of Ubuntu Server today. This was somewhat novel because it’s the first time that I have not had physical access to the machine I was installing on. The server install went very smoothly indeed. The next tasks were to install RStudio Server and Shiny ... [Read more...]

Radar plots

November 12, 2018 | R on datascienceblog.net: R for Data Science

Radar plots visualize several variables using a radial layout. This plot is most suitable for visualizing and comparing the properties associated with individual objects. In the following, we will use a radar plot for comparing the characteristics of whiskeys from different distilleries. A data set on whiskey Some of you ...
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Time Series and MCHT

November 12, 2018 | ntguardian

Introduction Over the past few weeks I’ve published articles about my new package, MCHT, starting with an introduction, a further technical discussion, demonstrating maximized Monte Carlo (MMC) hypothesis testing, bootstrap hypothesis testing, and last week I showed how to handle multi-sample and multivariate data. This is the final article ...
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How to de-Bias Standard Deviation Estimates

November 12, 2018 | John Mount

This note is about attempting to remove the bias brought in by using sample standard deviation estimates to estimate an unknown true standard deviation of a population. We establish there is a bias, concentrate on why it is not important to remove it for reasonable sized samples, and (despite that) ...
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RcppArmadillo 0.9.200.4.0

November 10, 2018 | Thinking inside the box

A new RcppArmadillo release, now at 0.9.200.4.0, based on the new Armadillo release 9.200.4 from earlier this week, is now on CRAN, and should get to Debian very soon. Armadillo is a powerful and expressive C++ template library for linear algebra ai... [Read more...]
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