Week 09

Classification evaluation in

Rapidminer

� Dataset: risk

week 09 – datasets.xls

� Algorithms: classification

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Decision tree for the risk dataset

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Computing the cost of the solution.

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Changing the cost matrix values.

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Computing the cost of the solution while giving different costs to different errors.

Confusion matrix is the same...

but the overall cost is not.

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Using the cost matrix when building the model

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creating a lift chart

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lift chart for two models

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Lift chart for the naive Bayes model

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