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Message-ID: <5db525fa050906015747bd43fb@mail.gmail.com>
Date: Tue, 6 Sep 2005 09:57:37 +0100
From: Shane O'Sullivan <shaneosullivan1@gmail.com>
Reply-To: shaneosullivan1@gmail.com
To: java-dev@lucene.apache.org
Subject: Re: Global Analysis possible in Lucene?
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Joaquin

Thanks for that. I'm not trying to accomplish anything myself right now - m=
y=20
employer asked me to do a technical evaluation of Lucene, and provided me=
=20
with a list of areas I was to look in to, just to see if Lucene has certain=
=20
capabilities. Global Analysis was one of the "would like" rather than "must=
=20
have" functions, but I couldn't find any information on it on the web.

Have you built GCA on top of Lucene? If so, how difficult was it from the=
=20
Lucene perspective? (As opposed to the GCA itself, which I understand is=20
quite tricky). Do you know of any open source applications of GCA on top of=
=20
Lucene?

Thanks

Shane

On 9/6/05, Joaquin Delgado <joaquin@triplehop.com> wrote:
>=20
> 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.
>=20
> For more info, read the SIGIR'96 paper from Xu and Croft:
>=20
> http://citeseer.ifi.unizh.ch/cache/papers/cs/508/http:zSzzSzwww.cs.umass.=
edu
> zSz~xuzSzsigir96-final.pdf/xu96query.pdf
>=20
> Shane: In principle, Lucene does provide all the tools needed to perform=
=20
> 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.
>=20
> -- Joaquin
>=20
> -----Original Message-----
> From: Erik Hatcher [mailto:erik@ehatchersolutions.com]
> Sent: Thursday, September 01, 2005 12:49 PM
> To: java-dev@lucene.apache.org
> Subject: Re: Global Analysis possible in Lucene?
>=20
> Shane - could you give us some details on what Global Analysis is and how=
=20
> it
> relates to full-text searching?
>=20
> I googled for it and came up with some heavy duty mathematical stuff, but
> did not see a direct relationship with information retrieval.
>=20
> Erik
>=20
>=20
> On Sep 1, 2005, at 9:36 AM, Shane O'Sullivan wrote:
>=20
> > Hi,
> >
> > Does anyone know if Lucene supports Global Analysis? I haven't seen
> > any documentation on it.
> >
> > Thanks
> >
> > Shane O'Sullivan
> >
>=20
>=20
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>=20
>=20
>=20
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