Use a span near query to add boost for the phrases. If you only want
to add boost for exact phrases (0 slop) you might want to consider
using shingles.
In order to add greater score for a date closer in time you can choose
between a range of solutions depending on your needs. Using a function
query is probably the easiest way, but using payloads or field boost
might also work.
I'm not sure about how safe it is but think the most efficient way for
your requirements (as I understand them) is to add documents ordered
by date, adding the closest to current date now. This will produce the
same score for the documents matching the same phrase but will return
the document with the lowest document number first. Or is it the other
way around? This will however probably mean that you'll need to
rebuild your complete index every time you add a new document. If you
can do that nightly or your corpus is static it shouldn't be a
problem. I never did this so please correct me if I'm wrong or confirm
if I'm right.
karl
2 okt 2009 kl. 04.57 skrev mitu2009:
Hi,
I've got 5 records in Lucene index.
a.Record 1 contains--tax analysis.Date field value is March 2009
b.Record 2 contains--Senior tax analyst.Date field value is Aug 2009
c.Record 3 contains--Senior tax analyst.Date field value is July 2009
d.Record 4 contains--tax analyst.Date field value is Feb 2009
e.Record 5 contains--Senior tax analyst.Date field value is Oct 2009
If the input keyword is senior tax analyst,then search results
should come
up in the following order:
a.Record 5--because this record is has got the most recent date and
has got
the matching phrase
b.Record 2--because this record has got second most recent date and
has got
the matching phrase
c.Record 3--because this record has got third most recent date and
has got
the matching phrase
d.Record 4
e.Record 1
Basically,I want to show the most relevant records grouped by date and
sorted in descending order by date.And then, I want to show remaining
records sorted by descending value of relevancy. How do i achieve
this with
Lucene?
Please help.
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