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Is Forgetting Good?

  • Yes....
  • BUT
  • Forget as little as possible.
  • Don't groom all of the hapaxes out an entire database. Instead, randomly delete only a few, and only as needed to make space for incoming features
  • This Yields A > 3x improvement in accuracy
  • over “block purge” or “hapax purge” database cleaning.

    Note: