Data may be subdivided into smaller groups using decision trees, which do this by dividing the data into two or more categories at each node. There may be unintended consequences to this method if the decision tree is not trimmed. Explain the process of pruning, when it happens, and why it's beneficial to do it.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Data may be subdivided into smaller groups using decision trees, which do this by dividing the data into two or more categories at each node. There may be unintended consequences to this method if the decision tree is not trimmed. Explain the process of pruning, when it happens, and why it's beneficial to do it.

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