tommy / data-science-blogposts
Individual blog posts on data science, statistics, mathematics, optimization, algorithms, etc.
Items
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Why "controlling for a variable" doesn't (usually) work
(dynomight.net)
Added 10 months ago
It's just adding a variable to a regression.
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Simpson's paradox all the way down
(dynomight.net)
Added 10 months ago
Visualizes Simpson's paradox, and shows how it's a deeper problem than many people realize.
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Added 11 months ago
A well-written blog post on partial pooling in linear regression. Also called hierarchical models, mixed-effects models, regularization, etc.
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Bayesian Rock Climbing Rankings | Ethan Rosenthal
(ethanrosenthal.com)
Added 11 months ago
Item response theory theory in action on rock climbing routes, with code in Stan.
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Simulating Chutes & Ladders in Python | Pythonic Perambulations
(jakevdp.github.io)
Added 11 months ago
An introduction to direct simulation, Markov processes, entropy and eigenvectors - with Python code.
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Examples of floating point problems
(jvns.ca)
Added 11 months ago
Specific examples of floating point bugs in real-world programs.
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Weights in statistics - Biased and Inefficient
(notstatschat.rbind.io)
Added 11 months ago
Comparing precision weights, frequency weights and sampling weights.
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Created: May 12, 2025 Updated: November 22, 2025
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