Nicola Romanò @nicolaromano@qoto.org

I collected all my writing on PCA into a free long-form math book.

https://peterbloem.nl/publications/unraveling-pca

It's called "Unraveling principal component analysis" and it contains a narrative explanation of PCA all the way down to the foundations.

That means it discusses eigenvectors, singular value decompositions, the spectral theorem, low-rank decompositions and much more.

The solar eclipse inspired our new puzzle design! It's double-sided: the sun on one side and the moon on the other. By flipping pieces over, you can gradually eclipse the sun turning day to night https://n-e-r-v-o-u-s.com/blog/?p=9636

I put Breakout (aka Brick Breaker) inside Google Calendar! It lets you decline any meetings you shatter.

blog info + chrome extension link in thread!

Few things bring home how much big tech caring about diversity was a zero interest rate phenomenon like Women Who Code shutting down due to lack of funding.

https://womenwhocode.com/blog/the-end-of-an-era-women-who-code-closing

Wow, after 25 years of Unix experience, I learned that you can filter output in #less.

Press ampersand (&) and enter a regex to show only lines matching the regex.

Press ampersand (&) and then exclamation mark (!) to apply an inverse filter.

I have programmed a small #rstats script combining the web-based #API of our SolarEdge #photovoltaic system with the local API of our go-e #wallbox.

If the car charges, the script looks up the production of the PV system and increases/decreases the charging current for the car accordingly. This makes the most of the collected #solar power. What now runs on an old #Raspberry Pi would’ve easily cost us 500 EUR + installation costs – and I have full control over everything! 🤓🤩

Because they bring me such joy, I will share with you all the software testing videos I share with my Software Design and Development students.

Video 1/3: “We don’t need user testing! We already know our users”

"It's difficult to judge the quality of someone's work," you tell me, "especially these days when so much is being published every day."

And you're right. Good work in many areas or research is difficult to pick out, obscured by a rising flood of self-promoting bullshit. /1

#statstab #64 Using tidybayes with the posterior package by @mjskay

Thoughts: Going #bayesian means a lot of wrangling the posteriors to get the info you want. A crucial skills I'm still learning, but invaluable.

#bayes #rstats #tidybayes #brms

https://mjskay.github.io/tidybayes/articles/tidy-posterior.html

Reminder: MIT Libraries have been out of contract with Elsevier for four years now.

Bravo MIT!

More like this please. Paying the ransom only encourages the robber-barons to crank-up the ransom price the next year. We need to break the cycle. Don't feed the monster.