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Effective Amazon Machine Learning by Alexis Perrier

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Data processing through seven transformations

Amazon ML offers the following seven transformations. Four transformations for text variables are as follows:

  • Lowercase transformation
  • Remove punctuation transformation
  • N-gram transformation
  • Orthogonal sparse bigram (OSB) transformation

Two transformations for numeric variables are as follows:

  • Normalization transformation
  • Quantile binning transformation

And one transformation for coupling text with categorical variables:

  • Cartesian product transformation

These transformations are well explained on the Amazon ML documentation (http://docs.aws.amazon.com/machine-learning/latest/dg/data-transformations-reference.html).

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