Qm

Topic · Mathematics

← All topics

Optimization

27 articles · 4 checkpoints · 17 deeper reads · 6 reference notes

A standalone topic: it is on no roadmap, so read it on its own terms.

Every article, in reading order

plant a flag as you finish each

Read these first

  1. Convexity is the property that guarantees a local best answer is the global best answer, it is the single dividing line between optimisation problems you can solve reliably and ones you generally can't.

  2. Every constrained optimisation problem has a shadow twin, built from the price of relaxing each constraint, solving that twin problem often turns out to be easier, and it always gives a certificate of how close your answer is to optimal.

  3. Walking downhill in the direction that drops fastest, taking a step, and repeating is almost the entire training algorithm behind modern machine learning, the whole method fits in one line, and every subtlety is in choosing the step size.

  4. Minimum-variance portfolio construction is a quadratic program: minimise a bowl-shaped risk function subject to straight-line constraints, a problem structured enough to be solved fast, reliably, and exactly.

Then the rest

Reference notes6 short entries