ELI5: Explain Like I'm 5

Multiplicative weight update method

The multiplicative weight update method is like a special tool that helps us make better decisions by learning from our mistakes. It's like when you're playing a game and you make a mistake- the next time you play, you'll remember not to make that same mistake again.

In the same way, the multiplicative weight update method helps us get better and better at making decisions based on our past mistakes. It works like this:

First, we start out with some initial guesses or assumptions about what the best decision might be.

Next, we try out these guesses and see how well they work. If they work well, we keep using them. But if they don't work well, we tweak them a little bit and try again.

But here's the tricky part- when we tweak them, we do it in a special way that makes sure we are learning from our mistakes. We multiply our guesses by a weight that depends on how well they worked in the past. If they worked well, we give them a bigger weight. But if they didn't work well, we give them a smaller weight.

We keep doing this over and over again, trying out different guesses and adjusting them based on how well they worked. Over time, we get better and better at making good decisions, and our guesses become more and more accurate.

So, the multiplicative weight update method is like a special tool that helps us learn from our mistakes and make better decisions in the future.