dismax is designed for usecases like...
* users enter a handfull of words (albino elephant gift)
* users enter some words, with prefixes indicating some
are required and some are prohibited (albino +elephand -gift)
* users enter words or phrases ("albino elephant" gift)
as far as AND/OR/NOT type logic, if it's the user telling you what they
want (ie: this term must be there, this term can't be there) that's where
the +/- syntax comes in; if it's a question of "how much flexibility
should i allow for matching on the terms that aren't
mandatory/prohibited?" that's where the "mm" option comes in.
: > http://wiki.apache.org/solr/DisMaxRequestHandler
i *just* updated that wiki page on friday with some specifics on the
params and usage ... but by all means anyone else out there using
dismax, *PLEASE* update it as you see fit to help explain how it works and
how to use it.
-Hoss
