I wrote a pretty abstract post on working with amplitudes, followed by more of the same, and then illustrated how it worked with a practical example (the ammonia molecule as… 3,560 more words

## Tags » Eigenvalues

I contemplated using Principal Component Analysis (PCA) for one of my recent projects in Machine Learning (ML) with Python as we were trying to figure out and eliminate some redundant features in our data. 197 more words

#### On uncertainty (with cartoon ending).

Reading about the uncertainty principle in popular literature almost always sets my teeth on edge.

I assume most people have a few qualms like that, things they often see done incorrectly that infuriate them. 3,274 more words

#### Honoris Causa: John Francis, Inventor of the QR Algorithm

It’s been yet another busy week, trying to catch up on things I missed last week as well as preparing for Thursday’s graduation ceremony for students from the… 1,125 more words

#### Current Mode Control- Where is the Second Pole?

Current-mode converters are super popular these days.

They have numerous benefits:

- Easy compensation- they are effectively a single pole system (the pole associated with inductor current is pushed out beyond Nyquist) 510 more words

#### Random matrices: tail bounds for gaps between eigenvalues

Hoi Nguyen, Van Vu, and myself have just uploaded to the arXiv our paper “Random matrices: tail bounds for gaps between eigenvalues… 489 more words