About Me

Hi, I’m Sihan Wei — a learner who documents the path, and lights it up for others.

I write (and think) about machine learning theory, optimization, and the occasional abstract rabbit hole.

This blog is a space for slow thoughts: the kind that start with a proof, wander through patterns, and land somewhere in probability.

I mostly write in English, but every now and then you’ll find me posting something fun in Chinese — it’s my mother tongue, and sometimes it just captures the feeling better.

For academic stuff: Check out my research homepage.

Hope you enjoy hanging out here on my blog!

About this blog

I started this blog because I once didn’t understand — and now that I do, I want to help others get there faster. This is my way of passing the torch.

This blog has three main flavors:

• Research notes — mostly for myself. Stuff I’m thinking about, half-finished ideas, little technical rabbit holes.
  If you’re into optimization or ML theory, cool — you might find a gem (or at least a weird equation) here and there.

• ML notes — for anyone trying to make sense of machine learning.
  I write these when I finally understand something I’ve been stuck on — hoping it saves someone else a bit of headache.

• Learning log — notes from when I’m learning something outside my usual lane.
  I try to capture not just what I’ve learned, but how I got there — the questions, the patterns, the mental clicks along the way.

Basically: I write to figure things out. And sometimes, I hit “publish” in case it helps someone else too.

Proofs — because structure matters.
Patterns — because abstraction connects everything.
Probabilities — because uncertainty is part of all learning, and all living.

This is the lens I bring to research — and sometimes, to writing too.

My Name

My Chinese name is 思涵, pronounced Sī Hán in Mandarin. (Hear it here via Google Translate)

It was chosen by my mom, and it means a lot to both of us.

“思” means “to think” or “thought,” and “涵” means “to forgive,” “to tolerate,” or “to be lenient.”

My mom once told me she had lived through a lot of anger and intolerance, and she hoped I’d grow into someone who thinks before speaking, and meets the world with calm and grace.

I still think about that often. And I hope to live up to the name.

Thanks for stopping by!