ELI5: Explain Like I'm 5

Gradient

Gradient is like climbing up or down a really big hill.

Imagine you're outside and you see a hill in front of you. It's big and round and you want to climb up it. You start from the bottom and take steps to go up. As you climb, you notice that with every step you take, the hill gets steeper and steeper.

The gradient is the measurement of how steep the hill is. It tells you how much the hill is changing as you climb it.

So if the hill has a small gradient, it means it's not very steep and you can climb up it easily. But if the gradient is big, it means the hill is very steep and it will be harder to climb.

The gradient can also tell you which direction you're going. For example, if the gradient is positive, it means you're going up the hill. But if it's negative, it means you're going down the hill.

In math, we use gradient to talk about how a function is changing. A function is like a mathematical rule that tells you what to do with a number. And the gradient tells you how much the rule is changing as you use different numbers.

So, in simple terms, the gradient is like a measurement of how steep something is, like a hill or a math function. It helps us understand how things are changing as we move along them.