Chapter 84: Chapter 73: Inspiration from Dimensionality Reduction Attack (9/10 for first order, requesting monthly pass)

After dinner, returning to the library for the second time, it was, as usual, time for Qiao Ze to help Su Mucheng with her difficult problems.

After watching teaching videos all afternoon, the questions that weren't quite understood would all be explained during this time.

Today, there was an additional beneficiary—Chen Yiwen.

For Qiao Ze, this wasn't considered a burden.

Explaining these simple fundamental concepts was just the right way to relax his brain.

...

"Ask," As the three of them got ready, Chen Yiwen heard Qiao Ze say these simple two words to Su Mucheng, then unconsciously looked towards the two of them.

Su Mucheng, who hadn't seemed to be paying much attention in the afternoon, now became serious and pushed her notebook to the middle between her and Qiao Ze. Then she leaned her entire head in closer: "Qiao Ze, I didn't quite understand the part about matrix dimensionality reduction in linear algebra today, it seems a bit different from what's in our textbook?"

Experience tales at m v|l e'-novelhall.net

"Show me the textbook," Qiao Ze said.

Su Mucheng found the textbook from her bag and handed it over.

Qiao Ze glanced at the table of contents and flipped through a few pages, then said, "Got it."

He then asked, "What's the essence of a matrix?"

Su Mucheng replied, "A function?"

Qiao Ze emphasized, "More accurately, it's a function for operating on vectors."

Su Mucheng nodded.

"What does it do?"

"Right, then understand it following the process I've written down. You only need to draw a few diagrams, compare the determinant algorithm with the matrix operation over time, establish a unit of area composition, and you'll understand the dimensionality reduction matrix."

Having said that, Qiao Ze then pushed the large piece of paper he had written on toward Su Mucheng, then looked up at Chen Yiwen, who was staring blankly at them, and said, "Chen Yiwen, you continue reading for now, if there are any questions we can talk about them later, I need to make some revisions to the framework I drafted this afternoon. Also, catch up quickly.

I think your work might be starting soon."

Afterward, Qiao Ze picked up his laptop and once again concentrated deeply on his research.

Chen Yiwen was utterly dumbfounded.

So this is the efficiency of self-study? Where on earth had his learning reached? Why was it that all the content seemed like something he hadn't even touched on yet?

Then he felt a bit wronged.

He was promised a problem-solving session tonight.

Never mind, sigh...

Darn gender advantage! May humanity perish!

As he thought this, Chen Yiwen still couldn't help but turn to Su Mucheng and ask quietly, "That... where have you self-studied linear algebra up to?"

"To the content of the second semester of sophomore year, I borrowed a textbook to follow along, why?"

"In just these few days, you've already self-studied up to the content of the second semester of sophomore year?"

"Qiao Ze messed up the order of knowledge points, following his rhythm makes learning a lot more efficient."

Chen Yiwen nodded blankly.

There was such a method to learning?!

"Qiao Ze also said there's a method to solving math problems and a different one for research, not the same," Su Mucheng always spared no effort in praising Qiao Ze.

However, just as she finished speaking, she was corrected by Qiao Ze: "My actual words were that solving mathematical problems is very important, it can enable you to quickly grasp and understand what you've learned, but if you want to do mathematical research, you must develop more flexible and open thinking on top of problem-solving."