Understanding AdaBoost – or how to turn Weakness into Strength

June 18, 2019
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Understanding AdaBoost – or how to turn Weakness into Strength

Many of you might have heard of the concept “Wisdom of the Crowd”: when many people independently guess some quantity, e.g. the number of marbles in a jar glass, the average of their guesses is often pretty accurate – even though many of the guesses are totally off. The same principle is at work in … Continue reading "Understanding...

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Getting from flat data a world of relationships to visualise with Gephi

June 17, 2019
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Getting from flat data a world of relationships to visualise with Gephi

by Mariluz Congosto Network analysis offers a perspective of the data that broadens and enriches any investigation. Many times we deal with...

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Visualizing the Copa América: Historical Records, Squad Profiles, and Player Profiles with xG statistics!

June 17, 2019
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Visualizing the Copa América: Historical Records, Squad Profiles, and Player Profiles with xG statistics!

Another summer and another edition of the Copa América!...

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Le Monde puzzle [#1104]

June 17, 2019
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Le Monde puzzle [#1104]

A palindromic Le Monde mathematical puzzle: In a monetary system where all palindromic amounts between 1 and 10⁸ have a coin, find the numbers less than 10³ that cannot...

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On my way to Manizales (Colombia)

June 16, 2019
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On my way to Manizales (Colombia)

Next week, I will be in Manizales, Colombia, for the Third International Congress on Actuarial Science and Quantitative Finance. I will be giving a lecture on Wednesday with Jed...

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Forecasting tools in development

June 16, 2019
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Forecasting tools in development

As I’ve been writing up a progress report for my NIGMS R35 MIRA award, I’ve been reminded at how much of the work that we’ve been doing is focused...

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modelDown is now on CRAN!

June 16, 2019
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modelDown is now on CRAN!

The modelDown package turns classification or regression models into HTML static websites. With one command you can convert one or more models into a website with visual and tabular...

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‘Simulating genetic data with R: an example with deleterious variants (and a pun)’

June 16, 2019
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‘Simulating genetic data with R: an example with deleterious variants (and a pun)’

A few weeks ago, I gave a talk at the Edinburgh R users group EdinbR on the RAGE paper. Since this is an R meetup, the talk concentrated on...

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Introducing the {ethercalc} package

June 15, 2019
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Introducing the {ethercalc} package

I mentioned EtherCalc in a previous post and managed to scrounge some time to put together a fledgling {ethercalc} package (it’s also on GitLab, SourceHut, Bitbucket and GitUgh, just...

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Exploring Categorical Data With Inspectdf

June 14, 2019
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Exploring Categorical Data With Inspectdf

Exploring categorical data with inspectdf

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Stabilising transformations: how do I present my results?

Stabilising transformations: how do I present my results?

ANOVA is routinely used in applied biology for data analyses, although, in some instances, the basic assumptions of normality and homoscedasticity of residuals do not hold. In those instances,...

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Fun with R and the Noops

June 14, 2019
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Fun with R and the Noops

Earlier this week, Github introduced Noops, a collection of simple black-box machines with API endpoints, with the goal of challenging developers of all skill levels to solve problems with...

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EARL London keynote announcement: Helen Hunter, Sainsbury’s

June 14, 2019
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We are delighted to announce that Helen Hunter, Chief Data Officer at Sainsbury’s will deliver the opening keynote address at this year’s London EARL conference. As Chief Data Officer...

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Periodogram with R

June 13, 2019
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Periodogram with R

Periodogram with R The power spectral density (PSD) is a function that describes the distribution of power over the frequency components composing our data set. If we knew the...

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Fixing your mistakes: sentiment analysis edition

June 13, 2019
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Fixing your mistakes: sentiment analysis edition

Today tidytext 0.2.1 is available on CRAN! This new release of tidytext has a collection of nice new features. Bug squashing! 🐛 Improvements to error messages and documentation 📃 Switching from broom...

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#rstats adventures in the land of @rstudio shiny (apps)

June 13, 2019
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#rstats adventures in the land of @rstudio shiny (apps)

PreambleColleagues and I had some sweet telemetry data, we did some simple models (& some relatively more complex ones too), we drew maps, and we wrote a paper. However,...

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Polygon plotting in R

June 13, 2019
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Polygon plotting in R

As a data analyst you want to provide clear cut insights for your end users, enabling them to extract all the business value provided by your solution. If your...

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R vs. Python

June 13, 2019
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For some time, I’ve planned to write up a point-by-point comparison of R and Python. I’ve done so now! Comments welcome. Advertisements

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Equal Size kmeans

June 12, 2019
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Equal Size kmeans

We were recently presented with a problem where the decision maker wanted to understand how their data would naturally group together. The classic technique of k-means clustering was a...

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RStudio Connect 1.7.4.2 – Important Security Patch

June 12, 2019
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This RStudio Connect patch release addresses an urgent security update and an important bug fix. Security Update: Password Authentication A vulnerability has been identified for customers using RStudio Connect’s built-in password...

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Community Call – Involving Multilingual Communities

Community Call – Involving Multilingual Communities

rOpenSci’s community is increasingly international and multilingual. While we have operated primarily in...

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Working with SPSS labels in R

June 12, 2019
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Working with SPSS labels in R

TL;DR 📖 This post provides an overview of R functions for dealing with survey data labels, particularly ones that I wish I’d known when I first started out analysing...

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Predicting MPG for 2019 Vehicles using R

June 12, 2019
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Predicting MPG for 2019 Vehicles using R

I am going to use regression, decision trees, and the random forest algorithm to predict combined miles per gallon for all 2019 motor vehicles.  The raw data is located...

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padr is updated

June 12, 2019
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Yesterday v.0.5.0 of the padr package hit CRAN. You will find the main changes in the thicken function, that has gained two new arguments. First of all, by an...

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RcppArmadillo 0.9.500.2.0

June 12, 2019
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RcppArmadillo 0.9.500.2.0

A new RcppArmadillo release based on a new Armadillo upstream release arrived on CRAN, and will get to Debian shortly. It brings a few upstream changes, including extened interfaces...

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Interactive Network Visualization with R

June 12, 2019
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Interactive Network Visualization with R

A walk through how networks are visualized at STATWORX using the package visNetwork. Der Beitrag Interactive Network Visualization with R erschien zuerst auf STATWORX.

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Why R? 2019 Conference – Keynotes and Workshops announced

June 11, 2019
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Why R? 2019 Conference – Keynotes and Workshops announced

Why R? is one of the best opportunities to learning secrets of data science from true experts. This year we are happy to invite you for six keynote...

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Intermittent demand, Croston and Die Hard

Intermittent demand, Croston and Die Hard

I have recently been confronted to a kind of data set and problem that I was not even aware existed: intermittent demand data. Intermittent demand arises when the demand for...

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Taking over maintenance of a software package

Taking over maintenance of a software package

Software is maintained by people. While software can in theory live on indefinitely, to do so requires people. People change jobs, move locations, retire, and unfortunately die sometimes. When...

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