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Classification is a supervised machine learning task where the goal is to classify the elements of a dataset into one element of a finite predetermined list of possible categories or groups, called class. A classical examples is the Iris flower data set: given the length and the width of the both sepals and petals of several Iris flowers, one has to classify each Iris flower, i.e. to detect the correct specie among Iris setosa, Iris virginica, Iris versicolor, etc.