Connect:  SPS Facebook Page  SPS Twitter  SPS LinkedIn  SPS YouTube Channel  SPS Google+ Page     Share: Share

1 Billion Word Language Modeling Benchmark

Ciprian Chelba

SLTC Newsletter, February 2014

We just released a LM benchmark at: and would like to advertise it to the speech community.

The purpose of the project is to make available a standard training and test setup for language modeling experiments.

The training/held-out data was produced from a download at using a combination of Bash shell and Perl scripts distributed here.

This also means that your results on this data set are reproducible by the research community at large.

Besides the scripts needed to rebuild the training/held-out data, it also makes available log-probability values for each word in each of ten held-out data sets, for each of the following baseline models:

  • unpruned Katz (1.1B n-grams),
  • pruned Katz (~15M n-grams),
  • unpruned Interpolated Kneser-Ney (1.1B n-grams),
  • pruned Interpolated Kneser-Ney (~15M n-grams)

ArXiv paper:

Happy benchmarking!