How it works...

In this recipe, the quality of wine based on the chemical properties of wines grown was predicted. To do this, a decision tree algorithm was used. A decision tree shows graphically the choices made or proposed. It does not happen so often that things are so clear that the choice between two solutions is immediate. Often, a decision is determined by a series of cascading conditions. Representing this concept with tables and numbers is difficult. In fact, even if a table represents a phenomenon, it may confuse the reader because the justification for the choice is not obvious.