2) Establish the root node using the ID3 algorithm from the data provided in table below. Draw a minimal decision tree (root node and the immediate branches/leaves. Symptom1 and Symptom2 are symptoms from a Disease, Test is a diagnostic test and the diagnosis is the decision of interest: does the patient have Disease or not.
2) Establish the root node using the ID3 algorithm from the data provided in table below. Draw a minimal decision tree (root node and the immediate branches/leaves. Symptom1 and Symptom2 are symptoms from a Disease, Test is a diagnostic test and the diagnosis is the decision of interest: does the patient have Disease or not.
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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Question
2) Establish the root node using the ID3
Symptom1 and Symptom2 are symptoms from a Disease, Test is a diagnostic test and the diagnosis is the decision of interest: does the patient have Disease or not.
Case# |
Symptom1 |
Symptom2 |
Test |
Diagnosis |
1 |
Severe |
No |
negative |
No Disease |
2 |
Severe |
Yes |
negative |
Disease |
3 |
Severe |
Yes |
positive |
Disease |
4 |
Mild |
No |
positive |
Disease |
5 |
Mild |
Yes |
negative |
Disease |
6 |
None |
No |
positive |
No Disease |
7 |
Mild |
No |
negative |
No Disease |
8 |
Severe |
No |
positive |
No Disease |
9 |
Mild |
Yes |
positive |
Disease |
10 |
None |
Yes |
negative |
No Disease |
11 |
None |
Yes |
positive |
Disease |
12 |
None |
No |
negative |
No Disease |
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