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Date: Sun, 18 Sep 2005 10:38:58 -0700
From: Jeff Rodenburg <jeff.rodenburg@gmail.com>
Reply-To: jeff.rodenburg@gmail.com
To: java-user@lucene.apache.org
Subject: Re: Sort by relevance+distance
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References: <E44B0B3A-A8B7-4303-A962-91AFF136C7E3@ehatchersolutions.com>
	 <20050918162428.84944.qmail@web51809.mail.yahoo.com>

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trimming the post further:

On 9/18/05, James Huang <metaprgmr@yahoo.com> wrote:
>=20
> >The problem is quite generic, I believe. What I like to do is similar to=
=20
> LIA-ch6, i.e. to find a "good Chinese Hunan-style restaurant near me." I=
=20
> prefer Hunan-style; however, if a good Human-style one is 12 miles, where=
=20
> there is a Shanghai-style only 2 miles, I may want to take that instead. =
So=20
> it's not a simple multi-sorting problem, it's an empirical ordering and t=
he=20
> parameters may have to be experimented. Thus far, I'm happy with that=20
> formula I gave earlier.


Now I have to find a way to customize the scoring during search (using Hits=
,=20
> not customized HitsCollector). Help is desparately needed here!
>=20

/**************************************************************************=
***********/

The typical approach (from what I know) to implementing an affect on scorin=
g=20
is to do field boosting. The difficulty in this scenario is the distance=20
factor, which sounds as if it's determined at run-time, plus the trickiness=
=20
of field boosting based on the values of the field. I've looked at this as=
=20
well, and it's not a simple problem to solve.

How are you determining if something is "near me"? Is it a calculation at=
=20
run-time, i.e. latitude, longitude, and geometric math? What options do you=
=20
have to determine distance?

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