leaf

Any endpoint in a decision tree. Unlike a condition, a leaf doesn't perform a test. Rather, a leaf is a possible prediction. A leaf is also the terminal node of an inference path. For example, the following decision tree contains three leaves: See Decision trees in the Decision Forests course for more information.

Practitioners refer to leaf when building, training, or evaluating machine learning systems. It appears in research papers, product documentation, and technical discussions about AI capabilities and limitations.