AdaOpt classification on MNIST handwritten digits (without preprocessing)

May 28, 2020
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AdaOpt classification on MNIST handwritten digits (without preprocessing)

AdaOpt classification on MNIST handwritten digits (without preprocessing)

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RStudio Shortcuts and Tips

May 28, 2020
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RStudio Shortcuts and Tips

Updated: May 2020 by Appsilon Data Science How to Work Faster in RStudio In this article we have compiled many of our favorite RStudio keyboard shortcuts, tips, and tricks...

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How to Safely Remove a Dynamic Shiny Module

May 28, 2020
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How to Safely Remove a Dynamic Shiny Module

Despite their advantages, Dynamic Shiny Modules can destabilize the Shiny environment and cause its reactive graph to be rendered multiple times. In this blogpost, I present how to remove...

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Version 0.9.1 of NIMBLE released

May 27, 2020
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Version 0.9.1 of NIMBLE released

We’ve released the newest version of NIMBLE on CRAN and on our website. NIMBLE is a system for building and sharing analysis methods for statistical models, especially for hierarchical models...

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Superior svg graphics rendering in R, and why it matters

This week we released a major new version of the rsvg package on CRAN. This package provides R bindings to librsvg2 which is a powerful system library for rendering...

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Correlation coefficient and correlation test in R

May 27, 2020
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Correlation coefficient and correlation test in R

Introduction Data Correlation coefficient Between two variables Correlation matrix: correlations for all variables Interpretation of a correlation coefficient Visualizations A scatterplot for 2 variables Scatterplots for several pairs of variables Another simple correlation matrix Correlation test For 2 variables For several...

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Critique of “Projecting the transmission dynamics of SARS-CoV-2 through the postpandemic period” — Part 1: Reproducing the results

May 27, 2020
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Critique of “Projecting the transmission dynamics of SARS-CoV-2 through the postpandemic period” — Part 1: Reproducing the results

I’ve been looking at the following paper, by researchers at Harvard’s school of public health, which was recently published in Science: Kissler, Tedijanto, Goldstein, Grad, and Lipsitch (2020) Projecting...

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Reasons why data science projects are not always successful – Part 1

May 27, 2020
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Reasons why data science projects are not always successful – Part 1

Data science is one of the most wide-ranging disciplines of the 21st century. Data scientists use a wide variety of methods and tools to generate more knowledge from data...

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PCA and UMAP with tidymodels and #TidyTuesday cocktail recipes

May 26, 2020
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PCA and UMAP with tidymodels and #TidyTuesday cocktail recipes

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 isn’t about predictive modeling,...

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Analyzing data from COVID19 R package

May 26, 2020
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Analyzing data from COVID19 R package

Introduction The idea behind this post was to play and discover some of the info contained in the COVID19 R package which collects data across several governmental sources.This package is...

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QBits Workspace: A New Online Editor to Share and Deploy R Code

May 26, 2020
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QBits Workspace: A New Online Editor to Share and Deploy R Code

QBits Workspace: A New Online Editor to Share and Deploy R Code Today we are excited to announce the QBits Workspace to run and deploy R code in the browser....

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My Favorite dplyr 1.0.0 Features

May 26, 2020
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My Favorite dplyr 1.0.0 Features

As you are likely aware by now, the dplyr 1.0.0 release is right around the corner. I am very excited about this huge milestone for dplyr. In this post,...

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CoronaDash app use case – Clustering countries’ COVID-19 active cases trajectories

May 26, 2020
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CoronaDash app use case – Clustering countries’ COVID-19 active cases trajectories

COVID-19 disease spread hit the World really globally and also the field of mathematicians/ statisticians/ machine learning researchers and related. These experts want to help to understand for example future...

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RStudio 1.3 Released

May 26, 2020
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RStudio 1.3 Released

Today we’re excited to announce the general release of RStudio 1.3. This release features many major improvements to the IDE, including: Dramatically improved accessibility for sight-impaired users, which also upgrades...

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Tidymodels and XGBooost; a few learnings

Tidymodels and XGBooost; a few learnings

This post will look at how to fit an XGBoost model using the tidymodels framework rather than using the XGBoost package directly. Tidymodels is a collection of packages that aims...

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The Role of the Data Scientist

May 26, 2020
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The Role of the Data Scientist

Data Scientists Face an Existential Crisis The term data scientist has always been a bit controversial. William Cleveland coined the term in 2001 to advocate the practical use...

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Polygons to hexagons

May 26, 2020
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Polygons to hexagons

Hexagon tessellation using the great geogrid package. The départements are the second level of administrative government in France. They neither have the same area nor the same population and...

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Why R? Webinar –

May 26, 2020
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Why R? Webinar –

May 28th (8:00pm UTC+2) will bring another fascinating Webinar at Why R? Foundation. We will have a joint talk by Bernd Bischl, Florian Pfisterer and Martin Binder about...

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Learning Statistics: Randomness is a Strange Beast

May 26, 2020
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Learning Statistics: Randomness is a Strange Beast

Our intuition concerning randomness is, strangely enough, quite limited. While we expect it to behave in certain ways (which it doesn’t) it shows some regularities that have unexpected consequences....

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What is nearly-isotonic regression?

May 26, 2020
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What is nearly-isotonic regression?

Let’s say we have data such that . (We assume no ties among the ‘s for simplicity.) Isotonic regression gives us a monotonic fit for the ‘s by solving...

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covid19 & some computational-corpus linguistics

May 25, 2020
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covid19 & some computational-corpus linguistics

A COVID19 lexicon Congressional Twitter Corpus (2020) text2vec framework for NLP :: Tokens & tokenizers Multi-word expressions & controlled vocabularies DTMs & prevalence of COVID19-related concepts GloVe model & COVID19 semantic space Networks & lexical co-occurrence Summary A...

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Introduction to landscape ecology with R

Maximilian H.K. Hesselbarth and I gave the Introduction to landscape ecology with R workshop during IALE-North America 2020 Annual Meeting. You can find the workshop abstract, slides, and recordings below. Abstract R is...

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Community and Collaboration: Writing Our Book in the Open

May 25, 2020
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Community and Collaboration: Writing Our Book in the Open

Ryan A. Estrellado is a public education leader and data scientist helping administrators use practical data analysis to improve the student experience. Chicken Farm in the Open In 2017,...

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tidylo is now on CRAN! 🎉

May 25, 2020
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tidylo is now on CRAN! 🎉

I am very pleased to announce that tidylo, a package for weighted log odds using tidy data principles, is now on CRAN! 🎉 I would like to send my...

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dtplyr speed benchmarks

May 25, 2020
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dtplyr speed benchmarks

R has many great tools for data wrangling. Two of those are the dplyr and data.table packages. When people wonder which one should they learn it is often argued...

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caracas: Computer Algebra in R via SymPy

It is with great pleasure that we can announce the release of caracas version 1.0.1 to CRAN (https://cran.r-project.org/package=caracas). The package enables user to make computer algebra from R using the...

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Considering the number of categories in an ordinal outcome

May 25, 2020
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In two Covid-19-related trials I’m involved with, the primary or key secondary outcome is the status of a patient at 14 days based on a World Health Organization ordered...

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RSwitch 1.7.0 Has Been Released

May 25, 2020
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I (and, apparently, Gandalf O_o) are pleased to announce that RSwitch version 1.7.0 has been released. (Direct Download) RSwitch is a macOS menubar utility that: makes it dead simple...

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Why R? Webinar – TUESDAY – Uplift modeling for marketing campaigns

May 25, 2020
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Why R? Webinar – TUESDAY – Uplift modeling for marketing campaigns

TUESDAY May 26th (8:00pm UTC+2) is a date for an extra Webinar at Why R? Foundation in a cooperation with McKinsey & Company. We will have a pleasure...

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