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Impurity or Gini index Metric used in the construction of a decision tree to determine the ‘’ pair that best separates the two classes of the problem. | |
Information gain or Entropy A metric used when constructing a decision tree to determine the ‘’ pair that best separates the two classes of the problem. | |
Interpretability A desirable property for any machine learning model is its interpretability, meaning that the type of discriminant function can be understood by a human user, making it the opposite of a black box model. | |
Item In reference to association rules, an item refers to one of the elements of the rows of a data set. In the case of regression or classification techniques, this would be the equivalent of the value for a single variable in an instance. | |
Itemset Set of items from a dataset. | |