Learning Data Mining with Python - Second Edition

scikit-learn estimators

Estimators that allows for the standardized implementation and testing of algorithms a common, lightweight interface for classifiers to follow. By using this interface, we can apply these tools to arbitrary classifiers, without needing to worry about how the algorithms work.

Estimators must have the following two important functions:

• fit(): This function performs the training of the algorithm - setting the values of internal parameters. The fit() takes two inputs, the training sample dataset and the corresponding classes for those samples.
• predict(): This the class of the testing samples that we provide as the only input. This function returns a NumPy array with the predictions of each input testing sample.

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