Hi Danny, what does a weight of 16 do effectively? I've experimented with
boosting scores in field and word-query configurations, and it never seemed to
affect the score enough to make any actual difference to relevance-ranked
results. If I remember correctly, 16 was insufficient--I would have needed 100
or 200 or more to move the rankings on title matches for example. I would love
to learn more. Thanks.
On Oct 6, 2010, at 2:28 PM, Danny Sokolsky wrote:
> You can put weights on the cts:query constructors to affect how much a match
> in each constructor contributes to score. You can also change the word query
> configuration on the database to boost the weight for a particular element
> (like title, for example). The word query configuration change bakes that
> weight into the index.
>
> To accomplish the cts:query weight boost, you might create a query that
> combines word-query and element-word-query with an and-query of a word-query
> and an or-query (so you keep the semantics the same as just the word-query),
> with a weight on the element-word-query. Something like:
>
> cts:and-query((
> cts:word-query($q),
> cts:or-query((
> cts:element-word-query(xs:QName("title"), $q, (), 16) ))
> ))
>
> This would boost the score of matches that occur in title elements.
>
> For more details about relevance, see "Relevance Scores: Understanding and
> Customizing" chapter in the Search Developer's Guide.
>
> -Danny
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Shah, Mehul
> (LNG-NPV)
> Sent: Wednesday, October 06, 2010 9:24 AM
> To: General Mark Logic Developer Discussion
> Subject: [MarkLogic Dev General] relevance by element/attribute values
>
> For a given query, is there a way to indicate field1 (title) has higher
> weight compared to other fields (body-text) for search relevance.
> i.e.
> Query: "New York"
> Doc1- has "New York" in <bodytext> 3 times
> Doc2- has "New York" in <title> once
> (where <bodytext> or <title> may have more elements within it.)
>
> How do I do search:search to get result in such order that Doc-2 appears
> first (even though it has less hits for the query terms).
>
>
> Thanks.
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