[Xapian-tickets] [Xapian] #524: dynamic weight

Xapian nobody at xapian.org
Sun Jan 16 11:05:10 GMT 2011

#524: dynamic weight
 Reporter:  saridemir          |        Owner:  olly   
     Type:  enhancement        |       Status:  closed 
 Priority:  normal             |    Milestone:         
Component:  Matcher            |      Version:         
 Severity:  normal             |   Resolution:  wontfix
 Keywords:                     |    Blockedby:         
 Platform:  Microsoft Windows  |     Blocking:         
Changes (by olly):

  * status:  new => closed
  * resolution:  => wontfix
  * component:  Other => Matcher
  * type:  defect => enhancement


 If I understand the original proposal correctly, the scaling should be
 applied to the results in descending rank order, which means that we don't
 know the true weight of a document until we have processed all documents,
 because it might be scaled down by any amount later on.  So rather than
 tracking the best N results we've seen so far, we would have to track all
 results which match, then go through and scale down some weights, then
 pick the best N and re-sort them.

 Or is the idea to simply increasingly scale down matches for the same site
 as we encounter them?  That seems horribly arbitrary...

 So either way, I don't think we want to implement this, hence closing as

Ticket URL: <http://trac.xapian.org/ticket/524#comment:2>
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