The harmonic mean is one of several kinds of averages. Chapter 2 discussed how to compute the
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The harmonic mean is one of several kinds of averages. Chapter 2 discussed how to compute the arithmetic mean, which is what most people typically think of when they compute an average. The harmonic mean, HH, of the positive real numbers, x1,x2,…,xnx1,x2,…,xn, is defined as
The FF measure is the harmonic mean of precision and recall. Use this fact to derive Eq. (6.28) for FF. In addition, write FβFβ as a function of true positives, false negatives, and false positives.
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Data Mining Concepts And Techniques
ISBN: 9780128117613
4th Edition
Authors: Jiawei Han, Jian Pei, Hanghang Tong
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