'Calculating information gain' diaporamas de présentation

Data Mining

Data Mining. What Is Data Mining?. Data Mining is the discovery of hidden knowledge, unexpected patterns and new rules in large databases Automating the process of searching patterns in the data. Objective of Data Mining. Any of four types of relationships are sought:

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Lecture 2: Decision Trees

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Information Gain

Information Gain. We want to determine which attribute in a given set of training feature vectors is most useful for discriminating between the classes to be learned. Information gain tells us how important a given attribute of the feature vectors is.

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