Lecture6-3

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Unformatted text preview: 13 Cluster 4 Sangmi Lee Pallickara 17 Sangmi Lee Pallickara 18 3 3/1/13 CS480 Principles of Data Management Spring 2013 CS480 Principles of Data Management Evaluating Detection Success •  False posi.ves –  Candidate pairs that are declared to be duplicate may not be duplicates •  False nega.ves Spring 2013 Precision and Recall False nega.ves True duplicates | true − positives | | true − positives | + | false − positives | | true − positives | = | declared _ duplicates | precision = True Posi.ves –  Candidate pairs that were not declared to be duplicates while they are | true − positives | | true − positives | + | false − negatives | | true − positives | = | true _ duplicates | recall = € Declared duplicates False posi.ves All record pairs True Nega.ves 19 Sangmi Lee Pallickara...
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This note was uploaded on 02/11/2014 for the course CS 480 taught by Professor Staff during the Spring '08 term at Colorado State.

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