[Xapian-discuss] Making SORTAFTER useful in omega?

[alexander lind]

Can't you just use the reordering parameter 'SORT' to sort on a value  
number?  In this a value number where you'd have put the dates that  
your users wants to sort by?

Alec

On Sep 11, 2008, at 7:12 AM, Arjen van der Meijden wrote:

> Is there no one with some input on this issue?
>
> Best regards,
>
> Arjen
>
> On 1-9-2008 22:43 Arjen van der Meijden wrote:
>> Hello List,
>>
>> Our users keep asking for some more "logical" sorting of search  
>> results.
>> Now the results are sorted on relevance, i.e. the raw weight, by
>> default. But since the users only see the percentage, that results  
>> in a
>> seemingly random secondary sorting.
>>
>> According to the docs and earlier mails, omega has the  
>> 'SORTAFTER' (and
>> docid sorting) functionality to allow date-based secondary sorting.  
>> But
>> according to later mails and the documentation that's only useful  
>> if you
>> don't use the default BM25-weighting. Unfortunately you can't alter  
>> the
>> weighting scheme via Omega-calls.
>> Nor does it seem to help to simply patch query.cc to use TradWeight
>> rather than BM25.
>>
>> Since we've built our set-up around omega, we'd rather not have to  
>> build
>> something similar or patch omega just because its missing a small but
>> important feature. Is it somehow possible to make the newer results  
>> in
>> the seemingly similarly relevant results sort on top within Omega?
>>
>> Best regards,
>>
>> Arjen
>>
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>
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