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From Markus Mehrwald <mmehrw...@gmx.at>
Subject Re: Exact match with fuzzy query
Date Sat, 12 Jun 2010 15:39:19 GMT


Am 12.06.2010 13:57, schrieb Ahmet Arslan:
>> I am using lucene 3.0.1. I use a MultiFieldQueryParser with
>> a GermanAnalyzer. In my index are some values among others
>> one document with the title "bauer". I append to every word
>> in my query a ~0.8 (here I am not sure if this is the way to
>> do it). If I try to search now, I will not get the document
>> with title "bauer" except I set the fuzzy value to very low
>> values of about .3.
>
>
>> Do i have to perform two searches with and without the
>> fuzzy parameter or can I do it somehow in one step like
>> using "bauer~0.8 bauer" as query?
>
> Yes bauer~0.8 bauer as query will bring you both exact and fuzzy matches.

Is this the normal way to do it?

>
>> I saw that the parser cuts of the "er" if I am not using
>> the fuzzy parameter. Can someone please tell my in a few
>> words why?
>
> This is answer of you question. FuzzyQuery is not analyzed. In your index you have bau,
in your query you have bauer. Thats why 0.3 slop is required.
>
>> How can I do a fuzzy search which also finds exact matches?
>
> removing stemming from your analyzer can work.
>
> Or org.apache.lucene.queryParser.analyzing.AnalyzingQueryParser should work in your case.

Unfortunately this parser seems to be missing in 3.0.1

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