[MarkLogic Dev General] Quality weight

[Danny Sokolsky]

Hi Stewart,

Maybe I am not understanding what you are asking, but I think <quality-weight> will do what you want using the search API.  It should behave the same way as passing a quality-weight to cts:search (and in fact, I think that is what the search API is doing with it).

Here is the tricky thing about quality:  the quality on a document is 0 by default, so unless you create a document with some quality or update with some quality, any quality-weight you add to a search will have no effect.

As an example, I created a single document in an empty db with a quality of 100:

xdmp:document-insert("/test.xml", <a>hello</a>, (), (), 100)

Next I ran search:search on it with no options:

search:search("hello")

the score was 204

Next, I ran search:search with a quality-weight of 1.0 (the default):

xquery version "1.0-ml";
import module namespace search =
  "http://marklogic.com/appservices/search"
  at "/MarkLogic/appservices/search/search.xqy";
 
let  $options :=
<options xmlns="http://marklogic.com/appservices/search">
  <quality-weight>1.0</quality-weight>
</options>
return
 
search:search("hello", $options)

The score is still 204.

Now change the options node as follows:

<quality-weight>2.0</quality-weight>

The score is now 304.

If you make it 3.0, it will be 404 [  104 + (3.0 * 100) ].

Does that make sense?
-Danny





-----Original Message-----
From: general-bounces at developer.marklogic.com [mailto:general-bounces at developer.marklogic.com] On Behalf Of Stewart Shelline
Sent: Monday, October 18, 2010 12:51 PM
To: General Mark Logic Developer Discussion
Subject: [MarkLogic Dev General] Quality weight

According to the Search Developer's Guide, a document's score is calculated as follows when using cts:search:

    Score = Score + (QualityWeight * Quality)

How can I get this same effect when using search:search? It appears the <quality-weight> parameter is not the right answer, since it applies the weight to the overall score for the document, not as a qualifier on the document's document quality, i.e.:

    Score = (Score + Quality) * QualityWeight


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