Understanding the algorithm of the regression tree is difficult.

A decision tree is a part of machine learning and a model for classifying or regressing data.

This forest tree has been alive for over 100 years.

There are many calamites growing in this pond.

The flowers of Prunus spinulosa announce the arrival of spring.

The leaves of the scale tree are arranged in scales, as the name suggests.

The Pisonia umbellifera is known for its beautiful flowers.

This rudder wood was removed from an old ship.

Mr. Tsuboki is my best friend.

The Oniwaban was in charge of information gathering and security during the Edo period.