surajx

"But a question nags at you: why can’t the world already know what you know?"

The state in which such a question arises is contradictory to the state of enlightenment.

The best resource I have come across is the Wikipedia page. It's comprehensive and concise. https://en.wikipedia.org/wiki/Matrix_calculus

And I thought it was some neural pathway...

The key term here is mimics - to be classified as intelligent, the an algorithm should be able to significantly mimic human level intelligence in your domain. For example if your algorithm could read human handwriting and predict what font it was written in, or maybe what font it's closely related to, is something that's closer to the AI bandwagon.

Any decent face recognition library would have done the job. But i guess the intention was to learn DL, and use it also as a marketing tool. Well done and really good presentation.