This is a fork of Terrier 5.1. Several small changes have been made to the code for experimental purposes. These are:

• Addition of a simple "S" stemmer as done by Atire.
• Addition of Krovetz stemmer.
• Addition of Lovetiz stemmer.
• Modified BM25 to use Atire weightings.
• Rewrote DirichletLM to be more faithful to the Indri version of QL.

In order to distinguish this fork from the original release, I have bumped the release up to 5.1.1.1. This is not an official Terrier release. Please see README-5.1.md for Glasgow details or go to https://terrier.org if you are looking for the original.