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Figure 1: The camera is a very finicky but fun 1950s Zorki-4. The easiest way to reach me is to send an email toa@xkqr.

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Blog 2 months ago
A noob learns FFT
I have never done any time-frequency transformations. I understand the general idea, but I have never worked with the details. Today I had a reason to use it, but that means learning the basics first. The following is three seconds of a single 5 Hz sine w
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Blog 2 months ago
Purely functional digital circuit simulator (SICP 3.3)
I have a copy of SICP, or as it is also known, The Wizard Book. This book is widely praised, but I can't take the time to work my way through all of it. Instead, I'm going to occasionally jump into the parts of it that look interesting. Since last week, a
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Blog 3 months ago
Digital circuit simulator in Haskell (SICP 3.3)
I have a copy of SICP, or as it is also known, The Wizard Book. This book is widely praised, but I can't take the time to work my way through all of it. Instead, I'm going to occasionally jump into the parts of it that look interesting. In the previous tw
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Blog 3 months ago
Kuiper Q-Q plot: are these the same?
When we tried to get an intuition for the differences in distribution functions, we learned that children subjected to a treatment had greater variation in their score than the reference group. (Continue reading the full article on the web.)
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Blog 3 months ago
Intuition for distribution differences
Imagine every person in a country is assigned some sort of score, and a higher score is better. I can't share the specifics around the score I'm investigating right now, but on the population level it is collected by a government agency. Here's the distri
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Blog 3 months ago
A full body MRI earns you a year of smoking
Alternative titles: … earns you a high-risk pregnancy … earns you an ascent of Matterhorn … earns you 10,000 km on a motorcycle … earns you two BASE jumps … earns you a day on the frontline in Ukraine These are all about equivalent to the risk of one year
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Blog 4 months ago
Data-directed programming in Haskell (SICP 2.4.3)
I have a copy of SICP, or as it is also known, The Wizard Book. This book is widely praised, but I can't take the time to work my way through all of it. Instead, I'm going to occasionally jump into the parts of it that look interesting. Last week, we look
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Blog 4 months ago
Tagged data in Haskell (SICP 2.4.2)
I have a copy of SICP, or as it is also known, The Wizard Book. This book is widely praised, but I can't take the time to work my way through all of it. However, sometimes I jump into parts of it that look interesting. Today, we'll see how to support mult
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Blog 4 months ago
GLM 5.2 playing text adventures
I've heard some buzz around the new GLM 5.2 open-weights model. They say it's very capable! I won't run a full comparison benchmark, but I have some credits sloshing around on OpenRouter so I figured I might compare GLM 5.2 to the similarly-priced Gemini
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