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Rocchio classification

  • Rocchio forms a simple representation for each class: the centroid/prototype

  • Classification is based on similarity to / distance from the prototype/centroid

  • It does not guarantee that classifications are consistent with the given training data

  • It is little used outside text classification

    • It has been used quite effectively for text classification

    • But in general worse than Naïve Bayes

  • Again, cheap to train and test documents

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