How to make documents low priority

[Doddamani, Prakash]

Hi,

 

I am using the boost factor as below

<str name="qf">

       field1^20.0 field2^5 field3^2.5 field4^.5 

</str>

 

Where it searches first in field1 then field1 and so on

 

Is there a way, where I can make some documents very low priority so
that they come at the end?

 

Scenario :

 

<doc>

<int name=" field1">aaa</int>

<str name=" field2">bbb</str>

<str name=" field3">cccc</str>

<str name=" field4">dddd</str>

<str name=" field5">1</str>

<str name=" field6">eeee</str>

<date name=" field7">2010-04-29T12:40:05.589Z</date>

</doc>

 

I want all the documents which have field5=1 come last and documents
which have field5=0 should come first while searching.

Any advise is greatly appreciated.

 

Thanks

Prakash