Introducing Boardgame Recommendation website built with Shiny

March 27, 2017
By

My family and I love boardgames.  We are also on the lookout for new ones that would fit with the ones we already like to play.  So I decided to create a boardgame recommendation websitehttps://larrydag.shinyapps.io/boardgame_reco/I built it using R.  The recommendation engine uses a very simple collaborative filtering algortihm based on correlation scores from other boardgame players collection...

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Le Monde puzzle [#1000…1025]

March 27, 2017
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Le Monde puzzle [#1000…1025]

Le Monde mathematical puzzle launched a competition to celebrate its 1000th puzzle! A fairly long-term competition as it runs over the 25 coming puzzles (and hence weeks). Starting with...

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Data science languages score highly in RedMonk rankings

March 27, 2017
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Data science languages score highly in RedMonk rankings

Redmonk have once again updated (a little later than usual) their bi-annual programming language report with their January 2017 rankings. If you haven't come across these rankings before, they...

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All-in on R⁴ : Progress [bars] on first post

March 27, 2017
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@eddelbuettel’s idea is a good one. (it’s a quick read…jump there and come back). I often wait for a complete example or new package announcement to blog something when...

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Online R (and data science) courses at Udemy for only $10 (3/27-3/31)

March 27, 2017
By
udemy-november-coupon-2015

In order to get the discount, simply click choose a link below and when paying use the promo code: ENDMARCH10 Udemy is offering readers of R-bloggers access to its global online...

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How to Reach More People with your Next Data Science Talk

March 27, 2017
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How to Reach More People with your Next Data Science Talk

Speaking publicly about your data science projects is one of the best things you can do for your portfolio. Writing your presentation will help you refine... The post How...

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Data science for Doctors: Inferential Statistics Exercises (part-3)

March 27, 2017
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Data science for Doctors: Inferential Statistics Exercises (part-3)

Data science enhances people’s decision making. Doctors and researchers are making critical decisions every day. Therefore, it is absolutely necessary for those people to have some basic knowledge of...

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An Introduction to Stock Market Data Analysis with R (Part 1)

March 27, 2017
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An Introduction to Stock Market Data Analysis with R (Part 1)

This is my first article in a two-part series introducing stock data analysis using R.

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Analyzing Accupedo step count data in R: Part 2 – Adding weather data

March 27, 2017
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Analyzing Accupedo step count data in R: Part 2 – Adding weather data

In my last set of posts, I wrote about analyzing data from the Accupedo step counter app I have on my phone. In this post, I'll talk about some...

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#0: Introducing R^4

March 27, 2017
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So I had been toying with the idea of getting back to the blog and more regularly writing / posting little tips and tricks. I even starting taking...

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Introducing brotools

I’m happy to announce my first R package, called brotools. This is a package that contains functions that are specific to my needs but that you might...

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Fitting Bayesian Linear Mixed Models for continuous and binary data using Stan: A quick tutorial

March 27, 2017
By

I want to give a quick tutorial on fitting Linear Mixed Models (hierarchical models) with a full variance-covariance matrix for random effects (what Barr et al 2013 call...

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Updated Shiny app

March 26, 2017
By

A short post to alert the world that my modest Shiny application, showing Major League Baseball run scoring trends since 1901, has been updated to include the 2016 season....

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Le Monde puzzle [#1001]

March 26, 2017
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Le Monde puzzle [#1001]

After a long lag (due to my missing the free copies distributed at Paris-Dauphine!), here is a Sudoku-like Le Monde mathematical puzzle: A grid of size (n,n) holds integer...

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RcppTOML 0.1.2

March 26, 2017
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A new release of RcppTOML is now on CRAN. This release fixes a few parsing issues for less frequently-used inputs: vectors of boolean or date(time) types, as...

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Economics chapter added to “Empirical software engineering using R”

March 26, 2017
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The Economics chapter of my Empirical software engineering book has been added to the draft pdf (download here). This is a slim chapter, it might grow a bit, but...

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Using R to study the Yemen Conflict with night light images

March 26, 2017
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Using R to study the Yemen Conflict with night light images

The Yemeni civil war has received very little attention despite the growing humanitarian disaster. There is a lack of reliable figures on the extent of the human suffering in...

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New book and package pmfdR

March 26, 2017
By

Processing and modelling financial data with R - ...

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More book, more cricket! 2nd edition of my books now on Amazon

March 25, 2017
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More book, more cricket! 2nd edition of my  books now on Amazon

The 2nd edition of both my books a) Cricket analytics with cricketr b) Beaten by sheer pace – Cricket analytics with yorkr is now available on Amazon, both as...

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R<-Slovakia meetup started to build community in Bratislava

March 25, 2017
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R<-Slovakia meetup started to build community in Bratislava

On 22. March a first special R related meetup called R<-Slovakia took place. As the name of the meetup group implies, it is based in Slovakia, in its capital...

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R&lt;-Slovakia meetup started to build community in Bratislava

March 25, 2017
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R&lt;-Slovakia meetup started to build community in Bratislava

On 22. March a first special R related meetup called R<-Slovakia took place. As the name of the meetup group implies, it is based in Slovakia, in its capital...

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RApiDatetime 0.0.2

March 25, 2017
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Two days after the initial 0.0.1 release, a new version of RApiDatetime has just arrived on CRAN. RApiDatetime provides six entry points for C-level functions of the R API...

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Linear regression in “The Man who counted”

March 25, 2017
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Linear regression in “The Man who counted”

Recently, I got a book by Brasilian writer  Júlio César de Mello e Souza (published under pen name Malba Tahan), titled The Man who counted. Book is a collection...

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Perform pairwise Wilcoxon test, classify groups by significance and plot results

March 25, 2017
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Perform pairwise Wilcoxon test, classify groups by significance and plot results

This post is the result of work performed in collaboration with my colleague Eleonora Paparelli (who actually did most of the work!). We wanted to compare several distributions using...

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Debugging Pipelines in R with Bizarro Pipe and Eager Assignment

March 25, 2017
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Debugging Pipelines in R with Bizarro Pipe and Eager Assignment

This is a note on debugging magrittr pipelines in R using Bizarro Pipe and eager assignment. Pipes in R The magrittr R package supplies an operator called “pipe” which...

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New Zealand election forecasts

March 25, 2017
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New Zealand election forecasts

Over the weekend I released a new webpage, connected to this blog, with forecasts for the New Zealand 2017 General Election. The aim is to go beyond poll...

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Suggests and Vignettes

March 24, 2017
By

Dirk Eddelbuettel quite rightly reminded us the other day that Suggests is not Depends. I am sorry to say that I am one of those who are using Suggests…...

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On a First Name Basis with Statistics Sweden

March 24, 2017
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On a First Name Basis with Statistics Sweden

Abstract Jugding from recent R-Bloggers posts, it appears that many data scientists are concerned with scraping data from various media sources (Wikipedia, twitter, etc.). However, one should be aware that...

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Comparing subreddits, with Latent Semantic Analysis in R

March 24, 2017
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Comparing subreddits, with Latent Semantic Analysis in R

FiveThirtyEight published a fascinating article this week about the subreddits that provided support to Donald Trump during his campaign, and continue to do so today. Reddit, for those not...

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