See below..... On 11/11/06, Storey, Jeff <[EMAIL PROTECTED]> wrote:
I stand corrected -- I am NOT getting partial matches, I was extracting partial matches from the text programmatically and thought that's what was being returned. On another topic, regarding Boolean queries and wildcard queries, I have two questions: It seems like when I enter the query "ball AND basket" it returns different results than "ball and basket." Is there a way to make the Boolean operators case insensitive?
No. I've found this kind of odd too. Here's a snippet... Boolean operators allow terms to be combined through logic operators. Lucene supports AND, "+", OR, NOT and "-" as Boolean operators(Note: Boolean operators must be ALL CAPS). from http://sewm.pku.edu.cn/src/clucene/doc/queryparsersyntax.html As for wildcard searches, one of the things I attempt to do is pick out
the words that caused a particular file to be returned. However, when I search for the term "yellow~" I might get something like "bellow." Is there a way to list what Lucene found in the document that made it relevant?
Well, first ~ isn't a wildcard, it's a "fuzzy search" (aka similar terms). So getting "bellow" for "yellow~" is expected. Although, somewhat confusingly, "lemon orange"~10 is a proximity search. * and ? are the wildcard characters. Searcher.explain() is probably your friend, although I haven't used it much, I've certainly seen it mentioned enough...... If you haven't, get a copy of Luke (google lucene luke). It's a program that allows you to explore your indexes, explain queries, explore the effects of different analyzers, etc. Really, really, really get a copy <G>.... Thanks for all the help.
Jeff -----Original Message----- From: Paul Borgermans [mailto:[EMAIL PROTECTED] Sent: Saturday, November 11, 2006 3:06 PM To: [email protected] Subject: Re: Partial Word Matches Indeed, the only way this can happen as far as I know Lucene is by using a stemmer during indexing, the standard analyzer won't result in such behaviour. hth Paul On 11/11/06, Erick Erickson <[EMAIL PROTECTED]> wrote: > > That's not the default behavior, so I'm perplexed. Normally, you have to > go > to considerable effort to get partial matches.... > > What analyzers are you using at both index and query time? Perhaps as > short > a code snippet as you could make showing this behavior would be a good > thing > to post. I flat guarantee folks will look at it. But please make it short > <G>. > > Best > ERick > > On 11/11/06, Storey, Jeff <[EMAIL PROTECTED]> wrote: > > > > Hi. I'm using Lucene to do some searching (using the Searcher object and > > passing it a ParsedQuery). I search for a word such as "long" and it is > > returning partial matches, such as "belong" and "along." Is there a way > > to turn off this behavior and only match whole words? > > > > > > > > Thank you, > > > > Jeff > > > > > > > > > > > > -- http://walhalla.wordpress.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
