Searching for the optimal hyper-parameters of an ARIMA model in parallel: the tidy gridsearch approach

November 14, 2018
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Searching for the optimal hyper-parameters of an ARIMA model in parallel: the tidy gridsearch approach

Introduction In this blog post, I’ll use the data that I cleaned in a previous blog post, which you can download here. If you want to follow along, download the monthly data. In the previous blog post, I used the auto.arima() function to very quickly get a “good-enough” model to predict future monthly total passengers flying from LuxAirport. “Good-enough” models can be all you need in...

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More on Bias Corrected Standard Deviation Estimates

November 14, 2018
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More on Bias Corrected Standard Deviation Estimates

This note is just a quick follow-up to our last note on correcting the bias in estimated standard deviations for binomial experiments. For normal deviates there is, of course,...

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More Sandwiches, Anyone?

November 14, 2018
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Consider this my Good Deed for the Day!A re-tweet from a colleague whom I follow on Twitter brought an important paper to my attention. I thought I'd share it...

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Use GitHub Vulnerability Alerts to Keep Users of Your R Packages Safe

November 14, 2018
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Use GitHub Vulnerability Alerts to Keep Users of Your R Packages Safe

Despite their now inherent evil status, GitHub has some tools other repository aggregators do not. One such tool is the free vulnerability alert service which will scan repositories for...

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anytime 0.3.3

November 14, 2018
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A new minor clean-up release of the anytime package arrived on CRAN overnight. This is the fourteenth release, and follows the 0.3.2 release a good week ago. anytime is...

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Gazing into the Abyss of P-Hacking: HARKing vs. Optional Stopping

November 14, 2018
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Gazing into the Abyss of P-Hacking: HARKing vs. Optional Stopping

by Angelika Stefan & Felix Schönbrodt Almost all researchers have experienced the tingling feeling of suspense that arises right before they take a look at long-awaited data: Will they...

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Windows Clipboard Access with R

November 13, 2018
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Windows Clipboard Access with R

The windows clipboard is a quick way to get data in and out of R. How can we exploit this feature to accomplish our basic data exploration needs and...

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A Mathematician’s Perspective on Topological Data Analysis and R

November 13, 2018
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A Mathematician’s Perspective on Topological Data Analysis and R

A few years ago, when I first became aware of Topological Data Analysis (TDA), I was really excited by the possibility that the elegant theorems of Algebraic Topology could...

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Rdew Valley: Optimizing Farming with R

November 13, 2018
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Rdew Valley: Optimizing Farming with R

I recently picked up a copy of my favorite game Stardew Valley again. If you don’t know the game, I can highly recommend it! You inherit a pixel farm and you...

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Easy time-series prediction with R: a tutorial with air traffic data from Lux Airport

November 13, 2018
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Easy time-series prediction with R: a tutorial with air traffic data from Lux Airport

In this blog post, I will show you how you can quickly and easily forecast a univariate time series. I am going to use data from the EU Open Data...

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Building a Repository of Alpine-based Docker Images for R, Part II

November 13, 2018
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Building a Repository of Alpine-based Docker Images for R, Part II

In the first article of this series, I built an Alpine-based Docker image with R base packages from Alpine’s native repositories, as well as one image with R compiled...

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AI for Good: slides and notebooks from the ODSC workshop

November 13, 2018
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AI for Good: slides and notebooks from the ODSC workshop

Last week at the ODSC West conference, I was thrilled with the interest in my Using AI for Good workshop: it was wonderful to find a room full of...

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Those “other” apply functions…

November 13, 2018
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Those “other” apply functions…

So you know lapply, sapply, and apply…but…what about rapply, vapply, or eapply? These are generally a little less known as far as the apply family of functions in R...

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A deep dive into glmnet: penalty.factor

November 13, 2018
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A deep dive into glmnet: penalty.factor

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...

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Installing RStudio & Shiny Servers

November 12, 2018
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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...

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Interchanging RMarkdown and “spinnable” R

November 12, 2018
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Dean Attali wrote this nice post a few years ago describing knitr’s spin function. This function allows a regular R file, with comments written with the roxygen2-style comment tag...

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Shiny 1.2.0: Plot caching

November 12, 2018
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Shiny 1.2.0: Plot caching

We’re pleased to announce the CRAN release of Shiny v1.2.0! This release features Plot Caching, an important new tool for improving performance and scalability in Shiny apps. If you’re not...

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TWIMLAI European Online Meetup about Trust in Predictions of ML Models

November 12, 2018
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TWIMLAI European Online Meetup about Trust in Predictions of ML Models

At the upcoming This week in machine learning and AI European online Meetup, I’ll be presenting and leading a discussion about the Anchors paper, the next generation of machine...

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The Antarctic/Southern Ocean rOpenSci community

Antarctic/Southern Ocean science and rOpenSci Collaboration and reproducibility are fundamental to Antarctic and Southern Ocean science, and the value of data to Antarctic science has long been promoted. The...

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Angela Bassa discusses managing data science teams and much more.

November 12, 2018
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Angela Bassa discusses managing data science teams and much more.

Hugo Bowne-Anderson, the host of DataFramed, the DataCamp podcast, recently interviewed Angela Bassa, the Director of Data Science at iRobot. Here is the podcast link. Introducing Angela Bassa Hugo: ...

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Preview my new book: Introduction to Reproducible Science in R

November 12, 2018
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I’m pleased to share Part I of my new book “Introduction to Reproducible Science in R“. The purpose of this …Continue reading →

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Time Series and MCHT

November 12, 2018
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Time Series and MCHT

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,...

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How to de-Bias Standard Deviation Estimates

November 12, 2018
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How to de-Bias Standard Deviation Estimates

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...

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Data Science With R Course Series – Week 9

November 12, 2018
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Data Science With R Course Series – Week 9

There are only two more weeks in the course! This week will extend what you learned from the Expected Value by performing an optimization and sensitivity analysis. The optimization and...

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Asking for help is challenging but is typically worth it

November 11, 2018
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Asking for help is challenging but is typically worth it

Recently I’ve been thinking on the subject of asking for help. In short, it’s hard to ask for help. It involves admitting to yourself that you can’t solve the...

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Utilizing K-means to extract colours from your favourite images

November 11, 2018
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Utilizing K-means to extract colours from your favourite images

I have been playing with package called imager, documentation on this package was extremely helpful! I have read through “getting started” as well as few other tutorial & examples. I...

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RATest. A Randomization Tests package is available on CRAN

November 10, 2018
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RATest. A Randomization Tests package is available on CRAN

This blog post introduces the RATest package we released a while back on CRAN with my colleague and good friend Mauricio Olivares-Gonzalez. The package contains a collection of randomization...

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RcppArmadillo 0.9.200.4.0

November 10, 2018
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RcppArmadillo 0.9.200.4.0

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...

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Gold-Mining Week 10 (2018)

November 10, 2018
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Week 10 Gold Mining and Fantasy Football Projection Roundup now available. Go get that free agent gold! The post Gold-Mining Week 10 (2018) appeared first on Fantasy Football Analytics.

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