4. Consider a node, t, in a decision tree. The set of training records in node t is Dt, which contains records from three different classes C₁, C2, and C3. The class distribution is as follow: Class Number of records C₁ X x 2x C2 C3 What are the impurity measures of this node using Gini index and misclassification error?

4. Consider a node, t, in a decision tree. The set of training records in node t is Dt, which contains records from three different classes C₁, C2, and C3. The class distribution is as follow: Class Number of records C₁ X x 2x C2 C3 What are the impurity measures of this node using Gini index and misclassification error?

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

Section: Chapter Questions

Problem 1PE

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