Factor models attempt to explain asset returns. You can approach this in two ways: define the factors you think are relevant, or use statistical learning to build the relevant factors from the data. My previous post took the first approach. This post will use principal component analysis (PCA) to let the data tell us which factors are most relevant in an FX factor model.

To understand AI's effect on moral character, ethicist Kwame Anthony Appiah goes back to John Stuart Mill, and the idea that people are shaped by their…

Sixteen years after the launch of Google Talk, Google messaging is still a mess.

Notebooker keeps everything you collect — and answers questions about it, reads it aloud as podcasts, and turns it into study material. Built in the open, on your own keys and storage.

Your home on the internet. Music, videos, events, merch, you.

ProPublica conducted a new analysis that shows the court is deciding more consequential rulings than ever before in largely unsigned orders with little to no explanation.

Open code, open design, open culture, and now open metrics.

can you draw your country? or any country?

Moonshot's Kimi K3 beat Claude Fable 5 and GPT 5.6 in some benchmarks... and it's an open model.

This is my DIY 3D-printed cycloidal gearbox, designed and built from scratch in my room. Every part was printed, assembled, and tested to create a compact gearbox with high torque, low backlash, and smooth motion. There are still improvements to make, but that’s part of the engineering journey. Every prototype gets me one step closer to a better design. What would you like to see next—torque testing, durability testing, or a full assembly tutorial? #DIY #CycloidalGearbox #3DPrinting #Engineering #Robotics #Robot #MechanicalEngineering #Gearbox #Maker #Prototype #Innovation #STEM #CAD #3DPrinted #RobotArm submitted by /u/Personal-Wear1442 [link] [Kommentare]