Well, as far as I know you can boost 3 different things:
- Field
- Document
- Query
So, I think you need to craft a solution using one of those.
Here are some possibilities for each:
1) Field
- make a keyword field which is alongside your content field
- boost your keyword field during indexing
- expand user queries to search 'content' and 'keywords'
2) Document
- I don't really think this one helps you in anyway
3) Query
- Scan a user query and selectively boost words that are known keywords
- This requires a keyword list and is not really scalable
That is all that comes to mind, at first glance. So, IMO, the winner IS #1.
For example:
Field _headline = Field.Text("headline", "...");
_headline.setBoost(3);
Field _content = Field.Text("content", "...");
_document.addField(_headline);
_document.addField(_content);
But, the tricky part is modifying queries to use both fields. If a user enters
"virus", it is easy (i.e. "content:(virus) OR headline:(virus)"). But, it quickly
gets more complex with more complex queries (especially boolean queries with AND and
such ... you probably would need something roughly like this: "a AND b" = "content:(a
AND b) OR headline:(a AND b) OR (content:a AND headline:b) OR (headline:a AND
content:b) and so on).
That's my 2 cents.
T
-----Original Message-----
From: news [mailto:[EMAIL PROTECTED] Behalf Of Leos Literak
Sent: Friday, August 13, 2004 8:52 AM
To: [EMAIL PROTECTED]
Subject: Re: boost keywords
Gerard Sychay napsal(a):
> Well, there is always the Lucene wiki. There's not a patterns page per
> se, but you could start one..
of course I could. If I had something to add :-)
but back to my issue. no reaction? So much people using
Lucene and no one knows? I would be gratefull for any
advice. Thanks
Leos
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