Suppose that an attribute splits the set of examples E into subsets E i and that each
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Suppose that an attribute splits the set of examples E into subsets E i and that each subset has p, positive examples and n negative examples. Show that the attribute has strictly positive information gain unless the ratio pi/ (p i + n i) is the same for all i.
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Related Book For
Artificial Intelligence A Modern Approach
ISBN: 978-0137903955
2nd Edition
Authors: Stuart J. Russell and Peter Norvig
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