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From ram_sj <rpachaiyap...@gmail.com>
Subject Re: Dismax params, mm &lt explanation
Date Sun, 25 Oct 2009 22:27:43 GMT

After reading the explanation in the book, its very clear now. Thank you
citing it with page number, 

Ram


hossman wrote:
> 
> 
> What you are looking at is an XML escaped version of this string...
> 
> 	2<-1 3<-2 6<100%
> 
> ...the syntax is documented here...
> 
> http://wiki.apache.org/solr/DisMaxRequestHandler#mm_.28Minimum_.27Should.27_Match.29
> http://lucene.apache.org/solr/api/org/apache/solr/util/doc-files/min-should-match.html
> 
> ...note that the string you have listed there actually makes very little 
> sense because of the 100% condition.  it says that for queries of more 
> then 6 clauses all of them are required (usually the mm param get's less 
> strict as the number of clauses increase)
> 
> (FYI: As the creator of the 'mm' param syntax, One of my favorite parts of 
> the new Solr 1.4 book is the explanation of mm options with multiple 
> clauses.  It's descibes in in a completely differnet way from anything i'd 
> ever thought of before (i was convinced it was a huge mistake the first 
> two times i read that section before the light bulb went off and i 
> realized how brilliant it was) and is probably a lot easier for many 
> people to understand -- if you have the book it's on p139)
> 
> :         2&lt;-1 3&lt;-2 6&lt;100%
> 	...
> : I requested solr to match atleast two fields, which i understood from
> the
> : documents. Can someone give me explanations for other params in it? 
> : 
> : "lt;-1 3"
> : 
> : "lt;-2 6"
> : 
> : "lt;100%"
> 
> 
> 
> -Hoss
> 
> 
> 

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