June 2020

Using Pyomo from R through the magic of Reticulate

June 30, 2020 | 0 Comments

Pyomo is a python based open-source package for modeling optimization problems. It makes it easy to represent optimization problems and can send it to different solvers (both open-source and commercial) to solve the problem and return the results in python. The advantage of pyomo compared to commercial software such as ... [Read more...]

Announcing Public Package Manager and v1.1.6

June 30, 2020 | 0 Comments

Today we are excited to release version 1.1.6 of RStudio Package Manager and announce https://packagemanager.rstudio.com. This service builds on top of the work done by CRAN, to offer the R community: Access to pre-compiled packages on Linux via install.packages resulting in significantly faster package install times on ... [Read more...]

Open-Source Authorship of Data Science in Education Using R

June 30, 2020 | 0 Comments

Joshua M. Rosenberg, Ph.D., is Assistant Professor of STEM Education at the University of Tennessee, Knoxville. In earlier posts, we shared how we wrote Data Science in Education Using R as an open book (Post 1, Post 2). In this post, we describe what we consider to be the open-source authorship ...
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Estimating Runtime for an R script

June 30, 2020 | 0 Comments

Estimating the runtime of an R script Background Recently a person on StackOverflow asked a question about how to estimate the runtime of an R script. She was attempting to produce corelation tests for 60 questions in a survey, using the corr.test() ... [Read more...]

Le Monde puzzle [#1149]

June 30, 2020 | 0 Comments

The weekly puzzle from Le Monde is a leaking variant on an old puzzle: Three buckets have capacities of 8, 5 and 3 litres, respectively. At the start of the game, the 8 litre bucket is full and both others are empty. Aiming at reaching exactly 4 litres in one bucket, water is transferred between […]
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beta: Evidence-based Software Engineering – book

June 30, 2020 | 0 Comments

My book, Evidence-based software engineering: based on the publicly available data is now out on beta release (pdf, and code+data). The plan is for a three-month review, with the final version available in the shops in time for Christmas (I plan to get a few hundred printed, and made ... [Read more...]

Impressions from e-Rum2020

June 30, 2020 | 0 Comments

e-Rum2020 conference connects many hundreds of R enthusiasts in virtual space! With the Covid-19 pandemic turning plans upside down on a global scale, what should have happened at the end of May in Milano as eRum2020 had to be converted into a virtu...
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The Bechdel test and the X-Mansion with tidymodels and #TidyTuesday

June 29, 2020 | 0 Comments

Lately I’ve been publishing screencasts demonstrating how to use the tidymodels framework, from first steps in modeling to how to evaluate complex models. Today’s screencast focuses on using bootstrap resampling with this week’s #TidyTuesday dataset from the Claremont Run Project about issues of the comic book series ...
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Introducing Polished.tech

June 29, 2020 | 0 Comments

Polished.tech is our new software service that makes it easier than ever to add modern authentication to your Shiny apps. Implementing authentication from scratch is inefficient and increases the probability of security vulnerabilities. Hand roll... [Read more...]

Future-Proofing Your Data Science Team

June 29, 2020 | 0 Comments

Photo by Brian McGowan on Unsplash This is a guest post from RStudio’s partner, Mango Solutions As RStudio’s Carl Howe recently discussed in his blog post on equipping remote data science teams, with the rapidly evolving COVID-19 crisis, companies have been increasingly forced to adopt working from home ... [Read more...]

one bridge further

June 29, 2020 | 0 Comments

Jackie Wong, Jon Forster (Warwick) and Peter Smith have just published a paper in Statistics & Computing on bridge sampling bias and improvement by splitting. “… known to be asymptotically unbiased, bridge sampling technique produces biased estimates in practical usage for small to moderate sample sizes (…) the estimator yields positive bias that ...
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How to become a data scientist in 30 days?

June 29, 2020 | 0 Comments

On a late evening, I was scrolling through Reddit and came across a news article about “Why Bill Gates wants us all to get vaccinated?”. The news site looked legitimate. I was half way through the article and saw quite a few grammatical errors. Me being lurker, I switched to ...
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Introducing Modeltime: Tidy Time Series Forecasting using Tidymodels

June 28, 2020 | 0 Comments

I’m beyond excited to introduce modeltime, a new time series forecasting package designed to speed up model evaluation, selection, and forecasting. modeltime does this by integrating the tidymodels machine learning ecosystem of packages into a streamlined workflow for tidyverse forecasting. Follow this article to get started with modeltime. If ...
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The Riddler – June 26th

June 28, 2020 | 0 Comments

#for working with polygons library(sf) library(sfheaders) library(tidyverse) library(gtools) set.seed(22081992) Riddler Express This weeks express deals with an erratic driver: In Riddler City, the city streets follow a grid layout, running north-south and east-west. You’re driving north when you decide to play a little game. ... [Read more...]

Visualizing Principle Components for Images

June 28, 2020 | 0 Comments

Principle Component Analysis (PCA) is a great tool for a data analysis projects for a lot of reasons. If you have never heard of PCA, in simple words it does a linear transformation of your features using covariance or correlation. I will add a few links below if you want ...
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Introducing GooglyPlusPlus!!!

June 28, 2020 | 0 Comments

“We can lift ourselves out of ignorance, we can find ourselves as creatures of excellence and intelligence and skill.” “Heaven is not a place, and it is not a time. Heaven is being perfect.” “Your whole body, from wingtip to wingtip, is nothing more than your thought itself, in a ...
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R Objects, S Objects, and Lexical Scoping

June 27, 2020 | 0 Comments

S Objects, R Objects, and Lexical Scoping Two key R design principles related to objects and lexical scoping are summarized in the following quote from John Chambers: To understand computations in R, two slogans are helpful:    – Everything t...
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