Self-intersecting Quadrilateral

May 25, 2025 | Jerry Tuttle

      A quadrilateral is a polygon having four sides, four angles, and four vertices. A polygon means that the figure is a closed shape, meaning the last line segment connects back to the first one, effectively enclosing an...
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Repost: Writing a book with Quarto

May 23, 2025 | Stephen Turner

Reposted from the original at https://blog.stephenturner.us/p/quarto-books....In the spirit of learning in public, I wanted an excuse to dive into Quarto to learn more about publishing formats beyond simple PDF and HTML documents.If you’re not fam...
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Xgboost

May 22, 2025 | Giuseppe Casalicchio

JavaScript is required to unlock solutions. Please enable JavaScript and reload the page, or download the source files from GitHub and run the code locally. Goal Our goal for this exercise sheet is to understand how to apply and work with XGBoost. The XGBoost algorithm has a large range of ... [Read more...]

Impact of Encoding

May 21, 2025 | Giuseppe Casalicchio

JavaScript is required to unlock solutions. Please enable JavaScript and reload the page, or download the source files from GitHub and run the code locally. Goal Apply what you have learned about using pipelines for efficient pre-processing and model training on a regression problem. House Prices in King county In ... [Read more...]

A step-by-step chart makeover

May 21, 2025 | R on Nicola Rennie

Making a bad chart As part of the 30 Day Chart Challenge in April 2025, I made a (deliberately) bad chart, which didn’t follow any data visualisation best practices: There are many things wrong with this chart, to list just some of them:... [Read more...]

Encoding and Scaling

May 20, 2025 | Giuseppe Casalicchio

JavaScript is required to unlock solutions. Please enable JavaScript and reload the page, or download the source files from GitHub and run the code locally. Goal Learn how to do preprocessing steps directly on a mlr3 Task object and how to combine a preprocessing with a learner to create a ... [Read more...]
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