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From "Edgar Meij" <>
Subject Re: Implemented subclasses of Similarity class in Lucene
Date Fri, 26 May 2006 09:06:58 GMT
Hi Ganesh,

We have developed a Language Modeling extension to Lucene at the
University of Amsterdam. It can be found here:

It was build around Lucene 1.4.3, so it isn't source compatible with
the latest Lucene version. We are currently working on
integrating/updating it to Lucene 1.9.


Edgar Meij

On 3/31/06, Ganesh Ramakrishnan <> wrote:
> Hi
> Is anyone aware of subclasses of the Similarity class in Lucene? Two subclasses are:
DefaultSimilarity and  SimilarityDelegator . Are any other implemented subclasses of Similarity,
developed by anyone else available on the web?  For example, Language Model based similarity,
or Okapi-BM similarity or different TFIDF weighing scehemes for similarity.
>   If so, can you point me to them?
>   Thanks and regards,
>   Ganesh.
> ---------------------------------
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