Displaying 3 results from an estimated 3 matches for "get_weight_based_on_recency".
2016 May 16
2
Weighting recent results
I was thinking about this some more: Is there a reason I can't just
weight by some function of recency at indexing time?
$weight = get_weight_based_on_recency(...);
$tg->index_text($txt,$weight);
If I wanted to allow the user the option of searching either in
recency-weighted mode or not, I could index each document into 2
different databases, one with and one without.
This avoids having to mess with subclassing PostingSource and C++ and
all th...
2016 May 18
0
Weighting recent results
On Mon, May 16, 2016 at 12:35:53PM -0400, Alex Aminoff wrote:
> I was thinking about this some more: Is there a reason I can't just
> weight by some function of recency at indexing time?
>
> $weight = get_weight_based_on_recency(...);
> $tg->index_text($txt,$weight);
The second parameter there is a WDF multiplier, which isn't really
"weight". It depends on the weighting formula you're using (and the
parameters set for it), but simply scaling up the WDF values for a whole
document is likely to be...
2016 May 03
2
Weighting recent results
On 5/2/2016 9:03 PM, Olly Betts wrote:
> On Fri, Apr 22, 2016 at 12:23:15PM -0400, Alex Aminoff wrote:
>> I did some digging and found a thread from 2011 talking about how to
>> subclass Xapian::PostingSource in order to incorporate the date or
>> recency of a document in its weighting:
>>
>> http://thread.gmane.org/gmane.comp.search.xapian.general/8849/focus=8856