(a) What is the GINI index of the dataset?   (b) What is the GINI index of the split on

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.1: Stem-and-leaf Plots And Histograms
Problem 9E
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(a) What is the GINI index of the dataset?

 

(b) What is the GINI index of the split on A1 and that on A2 respectively?

Problem 1. Consider a dataset with three columns of binary attributes A1, Az and a binary label
attribute Y. There are eight types of data point in total, and their corresponding proportions in
the dataset are captured in the column P.
type A1 A2
Y P
1
8%
1
1 29%
3
1
1
2%
4
1
1 18%
16%
1
2%
1
1%
1
1
1
24%
2.
Transcribed Image Text:Problem 1. Consider a dataset with three columns of binary attributes A1, Az and a binary label attribute Y. There are eight types of data point in total, and their corresponding proportions in the dataset are captured in the column P. type A1 A2 Y P 1 8% 1 1 29% 3 1 1 2% 4 1 1 18% 16% 1 2% 1 1% 1 1 1 24% 2.
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