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  • What is Gini index? Why it is used in data mining .

    hare singh nayak

    Member

    Updated: Oct 26, 2024
    Views: 1.3K
    The Gini coefficient measures the inequality among values of a <a href="https://en.wikipedia.org/wiki/Frequency_distribution" target="_blank" rel="nofollow noopener noreferrer">Frequency Distribution</a> (for example levels of income). A Gini coefficient of zero expresses perfect equality where all values are the same (for example, where everyone has an exactly equal income). A Gini coefficient of one (100 on the percentile scale) expresses maximal inequality among values (for example where only one person has all the income)


    this answer in from Wikipedia can any one explain me in simple way .
    what is the use of it in data mining.
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  • Ankita Katdare

    Administrator • Sep 9, 2012

    hare singh nayak
    The Gini coefficient measures the inequality among values of a <a href="https://en.wikipedia.org/wiki/Frequency_distribution" target="_blank" rel="noopener noreferrer">Frequency Distribution</a> (for example levels of income). A Gini coefficient of zero expresses perfect equality where all values are the same (for example, where everyone has an exactly equal income). A Gini coefficient of one (100 on the percentile scale) expresses maximal inequality among values (for example where only one person has all the income)


    this answer in from Wikipedia can any one explain me in simple way .
    what is the use of it in data mining.
    I hope some CEans will help you in simplifying the terminologies.
    Here is an excerpt from some book -
    <a href="https://books.google.co.in/books?id=pQws07tdpjoC&pg=PA341&lpg=PA341&dq=gini+index+in+data+mining&source=bl&ots=txHxYSoAZ-&sig=9fZ0-vQxAXgEku_yUyOXB8WEXv0&hl=en&redir_esc=y#v=onepage&q=gini%20index%20in%20data%20mining&f=false" target="_blank" rel="noopener noreferrer">Data Mining: Concepts and Techniques - Jiawei Han, Jian Pei, Micheline Kamber - Google Books</a>
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