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kgrams (version 0.2.0)

smoothers: k-gram Probability Smoothers

Description

Information on available k-gram continuation probability smoothers.

List of smoothers currently supported by kgrams

  • "ml": Maximum Likelihood estimate markov1913essaikgrams.

  • "add_k": Add-k smoothing dale1995philosophical,lidstone1920note,johnson1932probability,jeffreys1998theorykgrams.

  • "abs": Absolute discounting ney1991smoothingkgrams.

  • "wb": Witten-Bell smoothing bell1990text,witten1991zerokgrams

  • "kn": Interpolated Kneser-Ney. Kneser1995ImprovedBF,chen1999empiricalkgrams.

  • "mkn": Interpolated modified Kneser-Ney. chen1999empiricalkgrams.

  • "sbo": Stupid Backoff brants-etal-2007-largekgrams.

Usage

smoothers()
info(smoother)

Value

smoothers() returns a character vector, the list of code names of probability smoothers available in kgrams. info(smoother) returns NULL (invisibly) and prints some information on the selected smoothing technique.

Arguments

smoother

a string. Code name of probability smoother.

Author

Valerio Gherardi

References

Examples

Run this code
# List available smoothers
smoothers()

# Get information on smoother "kn", i.e. Interpolated Kneser-Ney
info("kn")

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