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From "Joaquin Delgado" <>
Subject RE: Global Analysis possible in Lucene?
Date Tue, 06 Sep 2005 05:52:44 GMT
I think Shane is refering to Global Context Analysis (vs. Local Context
Analysis), which refers to a statistical anlisys of the context
(sourrounding windows) around noun-phrases from the index for automatic
thesauri construction and query expansion.

For more info, read the SIGIR'96 paper from Xu and Croft:

Shane: In principle, Lucene does provide all the tools needed to perform GCA
and LCA but there is nothing built directly in the API do perform these
types of analysis. I've done some work in this area (more on variants of
LCA) so if you provide me with more information on what you are trying to
achieve, I might be able to help you.

-- Joaquin 

-----Original Message-----
From: Erik Hatcher [] 
Sent: Thursday, September 01, 2005 12:49 PM
Subject: Re: Global Analysis possible in Lucene?

Shane - could you give us some details on what Global Analysis is and how it
relates to full-text searching?

I googled for it and came up with some heavy duty mathematical stuff, but
did not see a direct relationship with information retrieval.


On Sep 1, 2005, at 9:36 AM, Shane O'Sullivan wrote:

> Hi,
> Does anyone know if Lucene supports Global Analysis? I haven't seen 
> any documentation on it.
> Thanks
> Shane O'Sullivan

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