R-bloggers

Previously, I took advantage of a dataset that linked preprints to their published counterparts to look at the fraction of papers in a journal that are preprinted. This linkage can be used to answer other interesting questions. Such as: when do authors preprint their papers relative to submission? And does ...

#175–176PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #175Sometimes even common tables tell the story. Today we have table of people that are family, but we nee...

The {emayili} package has adapters which make it simple to send email via a variety of services. For example, it caters specifically for ZeptoMail, MailerSend, Mailfence and Sendinblue. The latest version of {emayili}, 0.8.0 published on 23 April 2024, adds an an adapter for Mailtrap.

Puzzles no. 434–438PuzzlesAuthor: ExcelBIAll files (xlsx with puzzle and R with solution) for each and every puzzle are available on my Github. Enjoy.Puzzle #434Sometimes challenges we are facing have not really much with real world problems. And no. 434 is one of them. Our task this time was to make ...

It’s a widely accepted notion that money influences happiness, a concept famously associated with Noble laureate Daniel Kahneman, who purportedly demonstrated that emotional wellbeing increases with income but plateaus beyond an annual threshold of about $75,000. This idea has permeated both academic circles and popular media, reinforcing the belief that ...

A lot has happening in Monster Maze for the last months and a new chapter has now opened. Wanna play? Play here Code The code is publicly available in Github: monster-maze-shiny-mob...

Flip a fair coin 100 times, resulting in a sequence of heads (H) and tails (T). For each HH in the sequence, Alice gets a point; for each HT, Bob does, so e.g. for the subsequence THHHT Alice gets 2 points and Bob gets 1 point. Who is most likely to win? ...

Introduction I’ve written a lot about expected goals (xG) in soccer, but I haven’t yet talked much about possession value (PV) models1, another big topic in soccer analytics. What are they? Well, every PV model is different, but they all generall...

Introduction I’ve written a lot about expected goals (xG) in soccer, but I haven’t yet talked much about possession value (PV) models1, another big topic in soccer analytics. What are they? Well, every PV model is different, but they all generall...

The key to successful backtesting is to ensure that you only use the data that were available at the time of the prediction. No “future” data can be included in the model training set, otherwise the model will suffer from look-ahead bias (having unrealistic access to future data).

The R Consortium recently spoke with Mario Annau, co-organizer of the Vienna R User Group. During the conversation, he discussed the use of R in the finance and pharmaceutical industries... The post Navigating R’s Impact in Vienna: Insights from the Finance and Pharmaceutical Sectors appeared first on R Consortium.

The Two-Fund Separation Theorem introduced by James Tobin, a Nobel Prize-winning economist, is a fundamental concept in investment theory. It addresses how investors can optimally allocate their assets. In an efficient market an optimal portfolio is a combination of a risk-free asset and a market portfolio.

A fellow coder shared with me this recent manual (in French) entitled python (for the computer language, not the snake) written by Nathalie Azoulai  as he found it an interesting literary (if not computer) program. It parses rather quickly and I compiled it in one single run on my way ...