Decision tree complexity

A decision tree is a way of making decisions by asking yes or no questions. It's like playing a game where you have to guess what's in a box by asking questions about it. The more questions you ask, the easier it is to guess what's in the box.

But sometimes, there are so many questions to ask that it gets too hard to guess what's in the box. When that happens, we say that the decision tree is complex.

Think of it like building a tower out of blocks. When you only have a few blocks, it's easy to stack them up and make a tower. But when you have a lot of blocks, it gets harder and harder to build a tower that won't fall over.

The same thing happens with decision trees. When you have just a few questions, it's easy to make a decision based on the answers. But when you have a lot of questions, it gets harder and harder to make a decision that makes sense.

So, when we talk about decision tree complexity, we're talking about how many questions there are and how hard it is to make a decision based on those questions. If there are too many questions, it's too complex and we need to simplify it to make it easier to understand.