Hi,
A high boost depends on the index and query time boosts on other fields. If the
highest boost on a field is N, then N*100 will certainly do the trick.
I haven't studied the LuceneWriter but storing and indexing parameters are
very familiar. Storing a field means it can be retrieved along with the
document if it's queried. Having it indexed just means it can be queried. But
this is about fields, not on the entire document itself.
In an indexing filter you want to exclude the entire document.
Cheers,
> Hi Markus,
>
> Thanks for the quick reply.
>
> Could you tell me a possible a value for the high boost such that its to
> be negated? or Is there a way I can calculate or find that out.
>
> Also, for the other approach on using indexing filter does the ("...",
> LuceneWriter.STORE.YES, LuceneWriter.INDEX.NO, conf); does the work?
>
> Thanks,
> Abi
>
> On Mon, Feb 7, 2011 at 9:34 AM, Markus Jelsma
<[email protected]>wrote:
> > Hi,
> >
> > A negative boost does not exist and a very low boost is still a boost. In
> > queries, you can work around the problem by giving a very high boost do
> > documents that do not match; the negation parameter with a high boost
> > will do
> > the trick.
> >
> > If you don't want to index certain documents then you'll need an indexing
> > filter. That's a different approach.
> >
> > Cheers,
> >
> > > Hi all,
> > >
> > > I was looking at the following example,
> > >
> > > http://wiki.apache.org/nutch/WritingPluginExample
> > >
> > > In the example, the author sets a boost of 5.0f for the recommended
> > > tag.
> > >
> > > In this same way, can I also set a boost value such that a tag or
> >
> > content
> >
> > > is never indexed at all? If so, what would be the boost value? On a
> >
> > related
> >
> > > note, what are the default content that are usually(by default) indexed
> >
> > by
> >
> > > Lucene?
> > >
> > > Thanks a bunch for all your time and patience. Have a good day.
> > >
> > > Cheers,
> > > Abi
