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Data dictionaries for humans, agents and jumping frogs
Apparently, you can rent a frog and enter a jumping competition. You might find yourself competing against teams with years or even decades of experience choosing and preparing theirs. Welcome to the Calaveras County Jumping Frog Jubilee. In Astley et ... Continue reading : Data dictionaries for…
We chose React to learn it. The AI wrote it for us.
You can read the original post in its original format on Rtask website by ThinkR here: We chose React to learn it. The AI wrote it for us. Diary of a rewrite, episode 1 of 4. In February 2026 we chose React to rebuild an internal tool, knowing full well it would take ... Continue reading : We chose…
Friedman test in R, or the nonparametric version of the repeated measures ANOVA
Introduction Data Friedman test Aim and hypotheses Assumptions In R With base R With the {rstatix} package Interpretations Post-hoc tests Pairwise Wilcoxon signed-rank tests Nemenyi test Conover test Combination of statistical results and plo... Continue reading : Friedman test in R, or the…
O*NET ratings, job descriptions and classification codes as measures of occupational similarity
The last post identified potential transition pathways for truck drivers based on how closely other occupations matched them on skills, abilities and knowledge. This post follows the same basic approach across a wider range of occupations and asks whether two proxies could stand in for the ratings…
When Chain-Ladder Factors Misbehave: Smoothing Reserves with Polars and Whittaker-Henderson
Chain-Ladder reserving in polars, validated against R and Whittaker-Henderson smoothing for a difficult development pattern. Continue reading : When Chain-Ladder Factors Misbehave: Smoothing Reserves with Polars and Whittaker-Henderson
Semi-parametric option pricing based on underlying’s historical data (accepted at the osQF 2026 (ex R/Finance) conference)
This post is a follow-up to my previous posts on semi-parametric option pricing. A link to the study (accepted for presentation at the osQF 2026 conference) is provided at the end of this post. Continue reading : Semi-parametric option pricing based on underlying’s historical data (accepted at the…
The AI Hammer
A short reflection on the use of tools without consideration Continue reading : The AI Hammer
Bootstrap v traditional asymptotic normal assumptions by @ellis2013nz
Today’s just a very short sequel to last week’s post, where I had a look at some very skewed distributions to test the idea that sample sizes sometimes need to be in the tens of thousands for the sample mean to have a normal distribution. Turns out the... Continue reading : Bootstrap v traditional…
From URL to Theme: How {css2r} Steals a Website’s Colours, and Where It Gives Up
You can read the original post in its original format on Rtask website by ThinkR here: From URL to Theme: How {css2r} Steals a Website’s Colours, and Where It Gives Up You have thirty minutes before the demo, and your Shiny app still looks like Bootstrap 5 out of ... Continue reading : From URL to…
R Batteries Included (R 4.6.1 with OpenBLAS and Intel MKL) is now publicly accessible
R on Windows made faster Continue reading : R Batteries Included (R 4.6.1 with OpenBLAS and Intel MKL) is now publicly accessible
Join the R-Community on Google Groups and the next London R Users Group Social Event
Think about Stackoverflow/Reddit minus the negativity. Continue reading : Join the R-Community on Google Groups and the next London R Users Group Social Event
coinclp: the COIN-OR Clp linear programming solver is back on CRAN
Two small R packages of mine have gone to CRAN. coinclp binds the COIN-OR Clp linear programming solver and was accepted on […] The post coinclp: the COIN-OR Clp linear programming solver is back on CRAN appeared first on Sam Lovick Consulting. Continue reading : coinclp: the COIN-OR Clp linear…
Supporting open source work
An update on my open source work, and how you can help me keep doing it Continue reading : Supporting open source work
General code to fit ANOVA models with JAGS and ‘rjags’
There is a quote I really love from Marc Kéry’s book, “Introduction to WinBUGS for Ecologists” (2010, p. 11): “WinBUGS helps free the modeler in you.” And it’s so true! Once you deeply understand a statistical model in all its moving part... Continue reading : General code to fit ANOVA models with…
Sample size needed for central limit theorem to kick in by @ellis2013nz
Frank Harrell made this enlightening comment on BlueSky the other day: “At the heart of the failure of the CLT (central limit theorem) is its need for the mean and standard deviation to be independent. With asymmetric distributions they are far fr... Continue reading : Sample size needed for…
Grubbs’ Test in R: grubbs.test() Explained with a Real Example
Run Grubbs' test in R with grubbs.test() from the outliers package. Verified mtcars example with real G, U, and p-value output, plus when the test applies and what to do after it flags a value. Read More » Continue reading : Grubbs’ Test in R: grubbs.test() Explained with a Real Example
Happy Birthday rOpenSci — My Journey from First-Time Developer to Current Opportunities
What? People would fund me and mentor me building my own R package? My first time hearing about rOpenSci was, interestingly, at a bird conference. At an ornithological conference in 2023, I was chatting with my bird friend / colleague Steffi LaZerte,... Continue reading : Happy Birthday rOpenSci…
R Batteries Included (R 4.6.1 with OpenBLAS and Intel MKL)
R on Windows made faster Continue reading : R Batteries Included (R 4.6.1 with OpenBLAS and Intel MKL)
Model-agnostic prediction intervals in Python and R: does nnetsauce’s `QuantileRegressor` hold up?
Point predictions tell you what a model *thinks* will happen. They don't tell you how much to trust that number. nnetsauce's `QuantileRegressor` takes any sklearn-compatible regressor and turns it into a full quantile machine by optimizing an offset around its point predictions to minimize the…
chilemapas is back on CRAN
Maps of the Political and Administrative Divisions of Chile Continue reading : chilemapas is back on CRAN
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