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From Antony Bowesman <>
Subject Analyzers and multiple languages
Date Fri, 13 Oct 2006 07:42:57 GMT

I'm new to Lucene and wanted some advice on analyzers, stemmers and language 
analysis.  I've got LIA, so have read it's chapters.

I am writing a framework that needs to be able to index documents from a range 
of languages where just the character set of the document is known.  Has anyone 
looked at or is using language analysis to determine the language of a document 
in ISO-8859-1.

Is it worth doing or does StandardAnalyzer cope well with most European 
languages as long as it is provided with a suitable multi-lingual set of stop words.

What about stemming?  I see Google now says it does stemming, but again here 
language detection seems to be a stumbling block in the way of choosing the 
right stemmer.  Does stemming provide much of an index size reduction and is it 
actually useful in search?


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